Obesity

Meaningful weight loss was seen with the weight loss drugs Wegovy or Ozempic regardless of whether people had previous weight loss surgery, a first-of-its-kind study reveals.

In addition, insurance coverage/expense was the most common issue for people wishing to start the popular medications, known as GLP-1 receptor agonists. Side effects and drug shortages were among the reasons people stopped taking the medication.

Overall, people lost an average of 6% of their total body weight in almost 1 year of taking semaglutide, the class of drugs that includes Wegovy and Ozempic. When researchers compared people who had weight loss surgery with those who had not, total weight loss was almost identical: 5.8% in those who had surgery, vs 6.0% in those who had not.

People in this study lost a lower percentage of their total body weight, compared with people in clinical trials for the drugs, who tended to lose up to 15%, said lead investigator Pourya Medhati, MD, a postdoctoral research fellow at Brigham and Women’s Hospital in Boston.

These results suggest real-world weight loss results may be different than those in carefully controlled research studies. Dr. Medhati presented the findings at Digestive Disease Week® (DDW) 2024 in Washington.

Total weight loss was not significantly different between men and women in the surgery group. But in the nonsurgery group, women lost 6.4%, compared with 4.8% among men, a significant difference.

Dr. Medhati and Ali Tavakkoli, MD, chief of the Division of General and GI Surgery at Brigham and Women’s Hospital, used electronic health records to study 2491 adults prescribed semaglutide between 2018 and 2023 at Brigham and Women’s Hospital. Average age was 51, 74% were White, and 78% were women. A total of 13% had a history of weight loss surgery.
 

Costs, Side Effects, and Other Concerns

The investigators looked at issues around starting and staying on semaglutide in a subgroup of 500 patients. A total of 75 people never started the drug, for example. The majority, 72%, of this group said it was because of insurance coverage or the cost of the medication. Another 19% did not give a reason, and 9% said it was because of side effects.

People with higher body mass indexes and diabetes were less likely to start taking semaglutide, Dr. Medhati said.

Another 100 of the 500 patients started and then stopped semaglutide. Again, insurance coverage and cost were reasons, this time cited by 13%. About 36% stopped because of side effects; 21% pointed to a shortage of semaglutide; and 30% stopped for an unspecified reason.

“Our study highlights the importance of addressing insurance to ensure broader access,” Dr. Medhati said.

The 325 people who stayed on semaglutide lost an average of 8.5% of their total body weight at 50 weeks.
 

Access Remains Unequal

“These medications are incredibly powerful to treat obesity and weight-related disease both for people with a history of bariatric surgery and those without,” said session co-moderator Matthew Kroh, MD, vice chair of innovation and technology in the Department of General Surgery at Cleveland Clinic.

More equitable access to semaglutide and other GLP-1s is needed, he said. “Because the cost is so high and they’re not covered by most insurance plans at this point, people with better financial means have access to these medications,” while others may not.

Dr. Kroh said the findings may only apply to the patients, most of whom were female, White, and middle-aged. But he applauded the researchers for doing the study outside of a clinical trial. “Real-world data will help guide these decisions in the future,” he said.

A version of this article appeared on WebMD.com.

Meaningful weight loss was seen with the weight loss drugs Wegovy or Ozempic regardless of whether people had previous weight loss surgery, a first-of-its-kind study reveals.

In addition, insurance coverage/expense was the most common issue for people wishing to start the popular medications, known as GLP-1 receptor agonists. Side effects and drug shortages were among the reasons people stopped taking the medication.

Overall, people lost an average of 6% of their total body weight in almost 1 year of taking semaglutide, the class of drugs that includes Wegovy and Ozempic. When researchers compared people who had weight loss surgery with those who had not, total weight loss was almost identical: 5.8% in those who had surgery, vs 6.0% in those who had not.

People in this study lost a lower percentage of their total body weight, compared with people in clinical trials for the drugs, who tended to lose up to 15%, said lead investigator Pourya Medhati, MD, a postdoctoral research fellow at Brigham and Women’s Hospital in Boston.

These results suggest real-world weight loss results may be different than those in carefully controlled research studies. Dr. Medhati presented the findings at Digestive Disease Week® (DDW) 2024 in Washington.

Total weight loss was not significantly different between men and women in the surgery group. But in the nonsurgery group, women lost 6.4%, compared with 4.8% among men, a significant difference.

Dr. Medhati and Ali Tavakkoli, MD, chief of the Division of General and GI Surgery at Brigham and Women’s Hospital, used electronic health records to study 2491 adults prescribed semaglutide between 2018 and 2023 at Brigham and Women’s Hospital. Average age was 51, 74% were White, and 78% were women. A total of 13% had a history of weight loss surgery.
 

Costs, Side Effects, and Other Concerns

The investigators looked at issues around starting and staying on semaglutide in a subgroup of 500 patients. A total of 75 people never started the drug, for example. The majority, 72%, of this group said it was because of insurance coverage or the cost of the medication. Another 19% did not give a reason, and 9% said it was because of side effects.

People with higher body mass indexes and diabetes were less likely to start taking semaglutide, Dr. Medhati said.

Another 100 of the 500 patients started and then stopped semaglutide. Again, insurance coverage and cost were reasons, this time cited by 13%. About 36% stopped because of side effects; 21% pointed to a shortage of semaglutide; and 30% stopped for an unspecified reason.

“Our study highlights the importance of addressing insurance to ensure broader access,” Dr. Medhati said.

The 325 people who stayed on semaglutide lost an average of 8.5% of their total body weight at 50 weeks.
 

Access Remains Unequal

“These medications are incredibly powerful to treat obesity and weight-related disease both for people with a history of bariatric surgery and those without,” said session co-moderator Matthew Kroh, MD, vice chair of innovation and technology in the Department of General Surgery at Cleveland Clinic.

More equitable access to semaglutide and other GLP-1s is needed, he said. “Because the cost is so high and they’re not covered by most insurance plans at this point, people with better financial means have access to these medications,” while others may not.

Dr. Kroh said the findings may only apply to the patients, most of whom were female, White, and middle-aged. But he applauded the researchers for doing the study outside of a clinical trial. “Real-world data will help guide these decisions in the future,” he said.

A version of this article appeared on WebMD.com.

Meaningful weight loss was seen with the weight loss drugs Wegovy or Ozempic regardless of whether people had previous weight loss surgery, a first-of-its-kind study reveals.

In addition, insurance coverage/expense was the most common issue for people wishing to start the popular medications, known as GLP-1 receptor agonists. Side effects and drug shortages were among the reasons people stopped taking the medication.

Overall, people lost an average of 6% of their total body weight in almost 1 year of taking semaglutide, the class of drugs that includes Wegovy and Ozempic. When researchers compared people who had weight loss surgery with those who had not, total weight loss was almost identical: 5.8% in those who had surgery, vs 6.0% in those who had not.

People in this study lost a lower percentage of their total body weight, compared with people in clinical trials for the drugs, who tended to lose up to 15%, said lead investigator Pourya Medhati, MD, a postdoctoral research fellow at Brigham and Women’s Hospital in Boston.

These results suggest real-world weight loss results may be different than those in carefully controlled research studies. Dr. Medhati presented the findings at Digestive Disease Week® (DDW) 2024 in Washington.

Total weight loss was not significantly different between men and women in the surgery group. But in the nonsurgery group, women lost 6.4%, compared with 4.8% among men, a significant difference.

Dr. Medhati and Ali Tavakkoli, MD, chief of the Division of General and GI Surgery at Brigham and Women’s Hospital, used electronic health records to study 2491 adults prescribed semaglutide between 2018 and 2023 at Brigham and Women’s Hospital. Average age was 51, 74% were White, and 78% were women. A total of 13% had a history of weight loss surgery.
 

Costs, Side Effects, and Other Concerns

The investigators looked at issues around starting and staying on semaglutide in a subgroup of 500 patients. A total of 75 people never started the drug, for example. The majority, 72%, of this group said it was because of insurance coverage or the cost of the medication. Another 19% did not give a reason, and 9% said it was because of side effects.

People with higher body mass indexes and diabetes were less likely to start taking semaglutide, Dr. Medhati said.

Another 100 of the 500 patients started and then stopped semaglutide. Again, insurance coverage and cost were reasons, this time cited by 13%. About 36% stopped because of side effects; 21% pointed to a shortage of semaglutide; and 30% stopped for an unspecified reason.

“Our study highlights the importance of addressing insurance to ensure broader access,” Dr. Medhati said.

The 325 people who stayed on semaglutide lost an average of 8.5% of their total body weight at 50 weeks.
 

Access Remains Unequal

“These medications are incredibly powerful to treat obesity and weight-related disease both for people with a history of bariatric surgery and those without,” said session co-moderator Matthew Kroh, MD, vice chair of innovation and technology in the Department of General Surgery at Cleveland Clinic.

More equitable access to semaglutide and other GLP-1s is needed, he said. “Because the cost is so high and they’re not covered by most insurance plans at this point, people with better financial means have access to these medications,” while others may not.

Dr. Kroh said the findings may only apply to the patients, most of whom were female, White, and middle-aged. But he applauded the researchers for doing the study outside of a clinical trial. “Real-world data will help guide these decisions in the future,” he said.

A version of this article appeared on WebMD.com.

TOPLINE:

Patients with both type 2 diabetes (T2D) and obesity who have a lower diabetes severity, as characterized by the individualized metabolic surgery (IMS) scoring system, achieve better weight loss outcomes with semaglutide.

METHODOLOGY:

• Prior studies indicate that semaglutide leads to inferior weight loss outcomes in patients with obesity who have T2D vs those without T2D; however, no study has assessed semaglutide’s weight loss effects as a function of T2D severity.
• The IMS score, which includes four parameters (A1c, < 7%; insulin use; number of T2D medications; and T2D duration), is a validated tool that can categorize T2D severity as mild (0-24.9 points), moderate (25-94.9 points), or severe (95-180 points).
• This retrospective cohort study of patients with obesity and T2D taking ≥ 1 mg of semaglutide investigated weight loss outcomes over 12 months based on IMS scores at baseline as well as changes in glycemic parameters.
• The primary endpoint was weight loss outcomes based on four IMS score quartiles (quartile 1, 12-78 points; quartile 2, 79-107 points; quartile 3, 108-129 points; and quartile 4, 130-172 points) at 12 months after starting semaglutide.

TAKEAWAY:

• Investigators included 297 patients (42% women; mean age, 61.5 years).
• At 12 months, the weight loss outcomes decreased in a stepwise manner as the IMS score quartiles increased from 1 to 4 (total body weight loss %; quartile 1, 8.8; quartile 2, 6.9; quartile 3, 5.7; and quartile 4, 5.0).
• Similarly, patients in the mild to moderate IMS category achieved significantly superior weight loss outcomes than those in the severe category (−8.3% vs −5.5%; P = .006) at 12 months.
• All four individual IMS parameters (ie, being on insulin, having a higher baseline level of A1c, having a longer duration of T2D, and using a greater number of diabetes medications) were independently associated with significantly inferior weight loss outcomes.
• Glycemic parameters, such as fasting blood glucose and A1c levels, did not improve regardless of the IMS severity at baseline.

IN PRACTICE:

“Our findings could help clinicians set informed expectations for weight loss outcomes in patients with severe T2D taking semaglutide; however, it is likely that the cardiometabolic benefits associated with semaglutide treatment in this population far exceed the effect on weight loss,” the authors commented.

SOURCE:

Wissam Ghusn, MD, from the Department of Medicine, Mayo Clinic, Rochester, Minnesota, led this study, which was published online in eClinicalMedicine.

LIMITATIONS:

Due to the retrospective nature of this study, the authors had limited ability to abstract data on all IMS parameters. The presence of predominantly White and male patients in this cohort limited the generalizability of this study’s findings to other external populations. The number of patients in the mild IMS category was extremely low.

DISCLOSURES:

This study did not receive any specific grants, but the involved research staff received payments from the Mayo Clinic. One of the authors declared serving as a consultant, having contracts, and holding equity in various companies.

A version of this article appeared on Medscape.com.

TOPLINE:

Patients with both type 2 diabetes (T2D) and obesity who have a lower diabetes severity, as characterized by the individualized metabolic surgery (IMS) scoring system, achieve better weight loss outcomes with semaglutide.

METHODOLOGY:

• Prior studies indicate that semaglutide leads to inferior weight loss outcomes in patients with obesity who have T2D vs those without T2D; however, no study has assessed semaglutide’s weight loss effects as a function of T2D severity.
• The IMS score, which includes four parameters (A1c, < 7%; insulin use; number of T2D medications; and T2D duration), is a validated tool that can categorize T2D severity as mild (0-24.9 points), moderate (25-94.9 points), or severe (95-180 points).
• This retrospective cohort study of patients with obesity and T2D taking ≥ 1 mg of semaglutide investigated weight loss outcomes over 12 months based on IMS scores at baseline as well as changes in glycemic parameters.
• The primary endpoint was weight loss outcomes based on four IMS score quartiles (quartile 1, 12-78 points; quartile 2, 79-107 points; quartile 3, 108-129 points; and quartile 4, 130-172 points) at 12 months after starting semaglutide.

TAKEAWAY:

• Investigators included 297 patients (42% women; mean age, 61.5 years).
• At 12 months, the weight loss outcomes decreased in a stepwise manner as the IMS score quartiles increased from 1 to 4 (total body weight loss %; quartile 1, 8.8; quartile 2, 6.9; quartile 3, 5.7; and quartile 4, 5.0).
• Similarly, patients in the mild to moderate IMS category achieved significantly superior weight loss outcomes than those in the severe category (−8.3% vs −5.5%; P = .006) at 12 months.
• All four individual IMS parameters (ie, being on insulin, having a higher baseline level of A1c, having a longer duration of T2D, and using a greater number of diabetes medications) were independently associated with significantly inferior weight loss outcomes.
• Glycemic parameters, such as fasting blood glucose and A1c levels, did not improve regardless of the IMS severity at baseline.

IN PRACTICE:

“Our findings could help clinicians set informed expectations for weight loss outcomes in patients with severe T2D taking semaglutide; however, it is likely that the cardiometabolic benefits associated with semaglutide treatment in this population far exceed the effect on weight loss,” the authors commented.

SOURCE:

Wissam Ghusn, MD, from the Department of Medicine, Mayo Clinic, Rochester, Minnesota, led this study, which was published online in eClinicalMedicine.

LIMITATIONS:

Due to the retrospective nature of this study, the authors had limited ability to abstract data on all IMS parameters. The presence of predominantly White and male patients in this cohort limited the generalizability of this study’s findings to other external populations. The number of patients in the mild IMS category was extremely low.

DISCLOSURES:

This study did not receive any specific grants, but the involved research staff received payments from the Mayo Clinic. One of the authors declared serving as a consultant, having contracts, and holding equity in various companies.

A version of this article appeared on Medscape.com.

TOPLINE:

Patients with both type 2 diabetes (T2D) and obesity who have a lower diabetes severity, as characterized by the individualized metabolic surgery (IMS) scoring system, achieve better weight loss outcomes with semaglutide.

METHODOLOGY:

• Prior studies indicate that semaglutide leads to inferior weight loss outcomes in patients with obesity who have T2D vs those without T2D; however, no study has assessed semaglutide’s weight loss effects as a function of T2D severity.
• The IMS score, which includes four parameters (A1c, < 7%; insulin use; number of T2D medications; and T2D duration), is a validated tool that can categorize T2D severity as mild (0-24.9 points), moderate (25-94.9 points), or severe (95-180 points).
• This retrospective cohort study of patients with obesity and T2D taking ≥ 1 mg of semaglutide investigated weight loss outcomes over 12 months based on IMS scores at baseline as well as changes in glycemic parameters.
• The primary endpoint was weight loss outcomes based on four IMS score quartiles (quartile 1, 12-78 points; quartile 2, 79-107 points; quartile 3, 108-129 points; and quartile 4, 130-172 points) at 12 months after starting semaglutide.

TAKEAWAY:

• Investigators included 297 patients (42% women; mean age, 61.5 years).
• At 12 months, the weight loss outcomes decreased in a stepwise manner as the IMS score quartiles increased from 1 to 4 (total body weight loss %; quartile 1, 8.8; quartile 2, 6.9; quartile 3, 5.7; and quartile 4, 5.0).
• Similarly, patients in the mild to moderate IMS category achieved significantly superior weight loss outcomes than those in the severe category (−8.3% vs −5.5%; P = .006) at 12 months.
• All four individual IMS parameters (ie, being on insulin, having a higher baseline level of A1c, having a longer duration of T2D, and using a greater number of diabetes medications) were independently associated with significantly inferior weight loss outcomes.
• Glycemic parameters, such as fasting blood glucose and A1c levels, did not improve regardless of the IMS severity at baseline.

IN PRACTICE:

“Our findings could help clinicians set informed expectations for weight loss outcomes in patients with severe T2D taking semaglutide; however, it is likely that the cardiometabolic benefits associated with semaglutide treatment in this population far exceed the effect on weight loss,” the authors commented.

SOURCE:

Wissam Ghusn, MD, from the Department of Medicine, Mayo Clinic, Rochester, Minnesota, led this study, which was published online in eClinicalMedicine.

LIMITATIONS:

Due to the retrospective nature of this study, the authors had limited ability to abstract data on all IMS parameters. The presence of predominantly White and male patients in this cohort limited the generalizability of this study’s findings to other external populations. The number of patients in the mild IMS category was extremely low.

DISCLOSURES:

This study did not receive any specific grants, but the involved research staff received payments from the Mayo Clinic. One of the authors declared serving as a consultant, having contracts, and holding equity in various companies.

A version of this article appeared on Medscape.com.

TOPLINE:

The addition of bupropion/naltrexone to glucagon-like peptide 1 (GLP-1) receptor agonists leads to a further 4%-5% total body weight loss (TBWL) in patients with obesity, including those who show a poor response to initial GLP-1 monotherapy.

METHODOLOGY:

• Some patients with obesity experience suboptimal weight loss with GLP-1 monotherapy; however, adding treatments targeting multiple pathways may offer synergistic effects and improve outcomes.
• Researchers retrospectively evaluated adult patients with body mass index (BMI) ≥ 30 who attended an obesity clinic in Vancouver, Canada, and received a GLP-1 receptor agonist (liraglutide or semaglutide) for at least 6 months.
• They compared patients who continued receiving GLP-1 monotherapy with those who received add-on bupropion/naltrexone (combination therapy).
• The percent TBWL was compared between the groups from the initiation of the GLP-1 or the addition of bupropion/naltrexone over a period of 6 and 12 months.
• Patients prescribed combination therapy were stratified into responders (≥ 5% TBWL) and nonresponders (< 5% TBWL) based on their initial response to GLP-1 monotherapy.

TAKEAWAY:

• Researchers included 415 patients with BMI ≥ 30 (mean age, 47.3 years; 75.6% women), of whom 320 continued receiving GLP-1 monotherapy and 95 received add-on bupropion/naltrexone (combination therapy); the mean follow-up period was 510.9 days.
• At 12 months, there was no significant difference in the percent TBWL among patients receiving the GLP-1 monotherapy or combination therapy (9.6% TBWL in both).
• However, when patients were stratified by their initial GLP-1 response, combination therapy led to a greater percent TBWL than monotherapy in both responders (P = .002) and nonresponders (P < .0001).
• After the addition of bupropion/naltrexone, the mean percent TBWL was 4.3% (P < .001) and 5.3% (P = .009) at 6 and 12 months, respectively, among the responders, and 3.7% (P = .009) and 4.0% (P = .02) at 6 and 12 months, respectively, among the nonresponders.

IN PRACTICE:

“Specific characteristics of individuals who benefit from the bupropion/naltrexone augmentation should be examined to identify patient populations wherein this may be of greatest benefit,” the authors wrote.

SOURCE:

This study, led by James Naude, Faculty of Medicine, University of British Columbia, Vancouver, Canada, was published in the International Journal of Obesity.

LIMITATIONS:

Virtual care and self-reported weights by patients owing to the COVID-19 pandemic could have introduced bias. Some of the data on weight and medication adherence were missing. Moreover, there was no placebo control; hence, there may be confounding by indication.

DISCLOSURES:

The study was not supported by any specific funding. Two of the authors reported receiving educational grants and speaker fees, with one currently being an advisory board member to various pharma companies and the other an advisory board member to a pharma company in the past.

A version of this article appeared on Medscape.com.

TOPLINE:

The addition of bupropion/naltrexone to glucagon-like peptide 1 (GLP-1) receptor agonists leads to a further 4%-5% total body weight loss (TBWL) in patients with obesity, including those who show a poor response to initial GLP-1 monotherapy.

METHODOLOGY:

• Some patients with obesity experience suboptimal weight loss with GLP-1 monotherapy; however, adding treatments targeting multiple pathways may offer synergistic effects and improve outcomes.
• Researchers retrospectively evaluated adult patients with body mass index (BMI) ≥ 30 who attended an obesity clinic in Vancouver, Canada, and received a GLP-1 receptor agonist (liraglutide or semaglutide) for at least 6 months.
• They compared patients who continued receiving GLP-1 monotherapy with those who received add-on bupropion/naltrexone (combination therapy).
• The percent TBWL was compared between the groups from the initiation of the GLP-1 or the addition of bupropion/naltrexone over a period of 6 and 12 months.
• Patients prescribed combination therapy were stratified into responders (≥ 5% TBWL) and nonresponders (< 5% TBWL) based on their initial response to GLP-1 monotherapy.

TAKEAWAY:

• Researchers included 415 patients with BMI ≥ 30 (mean age, 47.3 years; 75.6% women), of whom 320 continued receiving GLP-1 monotherapy and 95 received add-on bupropion/naltrexone (combination therapy); the mean follow-up period was 510.9 days.
• At 12 months, there was no significant difference in the percent TBWL among patients receiving the GLP-1 monotherapy or combination therapy (9.6% TBWL in both).
• However, when patients were stratified by their initial GLP-1 response, combination therapy led to a greater percent TBWL than monotherapy in both responders (P = .002) and nonresponders (P < .0001).
• After the addition of bupropion/naltrexone, the mean percent TBWL was 4.3% (P < .001) and 5.3% (P = .009) at 6 and 12 months, respectively, among the responders, and 3.7% (P = .009) and 4.0% (P = .02) at 6 and 12 months, respectively, among the nonresponders.

IN PRACTICE:

“Specific characteristics of individuals who benefit from the bupropion/naltrexone augmentation should be examined to identify patient populations wherein this may be of greatest benefit,” the authors wrote.

SOURCE:

This study, led by James Naude, Faculty of Medicine, University of British Columbia, Vancouver, Canada, was published in the International Journal of Obesity.

LIMITATIONS:

Virtual care and self-reported weights by patients owing to the COVID-19 pandemic could have introduced bias. Some of the data on weight and medication adherence were missing. Moreover, there was no placebo control; hence, there may be confounding by indication.

DISCLOSURES:

The study was not supported by any specific funding. Two of the authors reported receiving educational grants and speaker fees, with one currently being an advisory board member to various pharma companies and the other an advisory board member to a pharma company in the past.

A version of this article appeared on Medscape.com.

TOPLINE:

The addition of bupropion/naltrexone to glucagon-like peptide 1 (GLP-1) receptor agonists leads to a further 4%-5% total body weight loss (TBWL) in patients with obesity, including those who show a poor response to initial GLP-1 monotherapy.

METHODOLOGY:

• Some patients with obesity experience suboptimal weight loss with GLP-1 monotherapy; however, adding treatments targeting multiple pathways may offer synergistic effects and improve outcomes.
• Researchers retrospectively evaluated adult patients with body mass index (BMI) ≥ 30 who attended an obesity clinic in Vancouver, Canada, and received a GLP-1 receptor agonist (liraglutide or semaglutide) for at least 6 months.
• They compared patients who continued receiving GLP-1 monotherapy with those who received add-on bupropion/naltrexone (combination therapy).
• The percent TBWL was compared between the groups from the initiation of the GLP-1 or the addition of bupropion/naltrexone over a period of 6 and 12 months.
• Patients prescribed combination therapy were stratified into responders (≥ 5% TBWL) and nonresponders (< 5% TBWL) based on their initial response to GLP-1 monotherapy.

TAKEAWAY:

• Researchers included 415 patients with BMI ≥ 30 (mean age, 47.3 years; 75.6% women), of whom 320 continued receiving GLP-1 monotherapy and 95 received add-on bupropion/naltrexone (combination therapy); the mean follow-up period was 510.9 days.
• At 12 months, there was no significant difference in the percent TBWL among patients receiving the GLP-1 monotherapy or combination therapy (9.6% TBWL in both).
• However, when patients were stratified by their initial GLP-1 response, combination therapy led to a greater percent TBWL than monotherapy in both responders (P = .002) and nonresponders (P < .0001).
• After the addition of bupropion/naltrexone, the mean percent TBWL was 4.3% (P < .001) and 5.3% (P = .009) at 6 and 12 months, respectively, among the responders, and 3.7% (P = .009) and 4.0% (P = .02) at 6 and 12 months, respectively, among the nonresponders.

IN PRACTICE:

“Specific characteristics of individuals who benefit from the bupropion/naltrexone augmentation should be examined to identify patient populations wherein this may be of greatest benefit,” the authors wrote.

SOURCE:

This study, led by James Naude, Faculty of Medicine, University of British Columbia, Vancouver, Canada, was published in the International Journal of Obesity.

LIMITATIONS:

Virtual care and self-reported weights by patients owing to the COVID-19 pandemic could have introduced bias. Some of the data on weight and medication adherence were missing. Moreover, there was no placebo control; hence, there may be confounding by indication.

DISCLOSURES:

The study was not supported by any specific funding. Two of the authors reported receiving educational grants and speaker fees, with one currently being an advisory board member to various pharma companies and the other an advisory board member to a pharma company in the past.

A version of this article appeared on Medscape.com.

NEW ORLEANS — Medications in development would preserve muscle mass and augment fat loss when used in combination with glucagon-like peptide 1 (GLP-1) receptor agonists taken for weight loss.

As drugs such as semaglutide (Wegovy) and the dual agonist glucose-dependent insulinotropic polypeptide (GIP)/GLP-1 tirzepatide (Zepbound) are producing unprecedented degrees of weight loss in increasing numbers of people, concern has arisen about the proportion of the lost weight, approximately 30%-50%, that is beneficial lean body mass vs fat mass. While some loss of muscle mass is expected with any rapid overall weight loss, it’s not clear what long-term effect that may have on physical function, bone density, and longevity, particularly in older adults with sarcopenic obesity who are at risk for muscle atrophy and frailty.

Several drugs in various stages of development are aimed at preserving or building muscle mass and boosting fat loss when used in combination with one of these medications for weight loss. Trials now underway will need to show improved function — not just increased muscle — and also establish safety, experts told this news organization.

One such agent is Veru Inc.’s oral selective androgen receptor modulator (SARM) enobosarm, currently in a phase 2b clinical trial for use with semaglutide in people who are at risk for muscle atrophy and weakness.

Also in a phase 2b trial for use with semaglutide is the antimyostatin intravenous agent bimagrumab. In July 2023, Eli Lilly purchased Versanis, the company that was developing that drug. Previous phase 2 data on bimagrumab alone vs placebo in people with obesity and type 2 diabetes showed improvement in muscle mass with greater fat loss but also produced a signal for pancreatitis requiring further evaluation.

Scholar Rock’s intravenous antimyostatin apitegromab is also now in a phase 2 trial and Biohaven Pharmaceuticals is expected to launch a phase 2 trial of its subcutaneous antimyostatin taldefgrobep alfa later this year.

Most of these and other similar agents have also been under investigation for use in one or more other muscle-losing conditions including spinal muscular atrophy, sarcopenia, and cancer.

“Wouldn’t it be nice if there was a drug that built up muscle mass?”

Data presented in two late-breaking posters at the annual meeting of the American Association of Clinical Endocrinology meeting held May 9-11, 2024, laid the groundwork for the subsequent phase 2 studies of enobosarm in combination with a GLP-1 RA. One showed increases in total lean mass and decreases in total fat mass with 3 mg enobosarm for 14 days compared with placebo in both healthy young men and older men (≥ 60 years), with the greatest benefit seen in the older men who had lower lean mass and higher fat mass at baseline.

The other was a post hoc analysis of a phase 3 clinical trial of 3 mg/d oral enobosarm for the treatment of muscle wasting in advanced lung cancer. Here, a subset of participants who were aged ≥ 60 years and had obesity also showed reductions in fat mass and preservation of lean body mass with the drug compared with placebo, leading to “high-quality weight loss.”

Endocrinologist Adrian Dobs, MD, professor of medicine and oncology at Johns Hopkins University Medical School, Baltimore, an investigator on both of the Veru-sponsored studies, told Medscape Medical News, “The wishful thinking about these drugs has been around for quite a while, particularly in the cancer population or ... in a frail population. The hope was, wouldn’t it be nice if there was a drug that built up muscle mass? Certainly, we know that going into the gym does that but looking for some medication had been the goal. The thought was this class of medication would have a muscle-building effect, an anabolic effect without an androgenic effect causing masculinization.”

The problem with those studies in terms of regulatory approval, Dr. Dobs said, was defining the endpoints. “The [US Food and Drug Administration] is very interested in functional status. You can show that there is an increase in muscle mass. But to take that leap and show that a person can walk upstairs, carry groceries, and be more functionally able is hard to prove.”

And she noted that bringing frail elderly people into clinical trials isn’t easy. But now, “this is an interesting new avenue of scientific pursuit, looking at this particular population that is losing weight due to GLP-1 [agonists]. Now we’re dealing with high numbers of patients who are easy to identify because they’re taking those medications.”

“We have to also focus on ‘first, do no harm’”

Asked to comment, Angela Fitch, MD, associate director of the Massachusetts General Hospital Weight Center, Boston, expressed caution. “We have to remember that it is not all about muscle mass. Maintaining muscle mass with weight loss is obviously important, but even today, with 30% of the weight loss coming from lean mass, which is not the same as muscle, there are huge benefits from fat loss, including cardiovascular and cancer risk reduction, increased life increased life expectancy, and diabetes remission.”

Moreover, Dr. Fitch pointed out, SARMs have been linked to increased cardiovascular events and blood clots.

“So, we have to also focus on ‘first, do no harm’. A lot of these muscle-promoting medications have been associated with increased risk of other things. So, it is going to take a lot of time and testing to be sure they are safe. While I am supportive of research to look into these risks vs benefits, we have to be mindful of the risks and recognize that in most cases of weight loss in people with obesity losing some lean mass is acceptable and the benefits of fat loss outweigh the risks of lean loss, especially if people are doing resistance exercise and maintaining strength.”

“Wherever the GLP-1s go, we go”

In an investor call held on May 8, 2024, Veru’s Chairman, CEO, and President Mitchell Steiner, MD, said that the current phase 2b study of enobosarm with semaglutide is only examining people aged ≥ 60 years to maximize the functional outcome benefit. But phase 3, he anticipates, will be “all comers, for sure. And then we’ll embed special populations.” The thinking, he said, is “Wherever the GLP-1s go, we go.”

Fitch has participated on advisory boards for Jenny Craig, Novo Nordisk, Eli Lily, Sidekick Health, and Vivus. Dobs had no disclosures beyond conducting research for Veru.
 

A version of this article appeared on Medscape.com.

NEW ORLEANS — Medications in development would preserve muscle mass and augment fat loss when used in combination with glucagon-like peptide 1 (GLP-1) receptor agonists taken for weight loss.

As drugs such as semaglutide (Wegovy) and the dual agonist glucose-dependent insulinotropic polypeptide (GIP)/GLP-1 tirzepatide (Zepbound) are producing unprecedented degrees of weight loss in increasing numbers of people, concern has arisen about the proportion of the lost weight, approximately 30%-50%, that is beneficial lean body mass vs fat mass. While some loss of muscle mass is expected with any rapid overall weight loss, it’s not clear what long-term effect that may have on physical function, bone density, and longevity, particularly in older adults with sarcopenic obesity who are at risk for muscle atrophy and frailty.

Several drugs in various stages of development are aimed at preserving or building muscle mass and boosting fat loss when used in combination with one of these medications for weight loss. Trials now underway will need to show improved function — not just increased muscle — and also establish safety, experts told this news organization.

One such agent is Veru Inc.’s oral selective androgen receptor modulator (SARM) enobosarm, currently in a phase 2b clinical trial for use with semaglutide in people who are at risk for muscle atrophy and weakness.

Also in a phase 2b trial for use with semaglutide is the antimyostatin intravenous agent bimagrumab. In July 2023, Eli Lilly purchased Versanis, the company that was developing that drug. Previous phase 2 data on bimagrumab alone vs placebo in people with obesity and type 2 diabetes showed improvement in muscle mass with greater fat loss but also produced a signal for pancreatitis requiring further evaluation.

Scholar Rock’s intravenous antimyostatin apitegromab is also now in a phase 2 trial and Biohaven Pharmaceuticals is expected to launch a phase 2 trial of its subcutaneous antimyostatin taldefgrobep alfa later this year.

Most of these and other similar agents have also been under investigation for use in one or more other muscle-losing conditions including spinal muscular atrophy, sarcopenia, and cancer.

“Wouldn’t it be nice if there was a drug that built up muscle mass?”

Data presented in two late-breaking posters at the annual meeting of the American Association of Clinical Endocrinology meeting held May 9-11, 2024, laid the groundwork for the subsequent phase 2 studies of enobosarm in combination with a GLP-1 RA. One showed increases in total lean mass and decreases in total fat mass with 3 mg enobosarm for 14 days compared with placebo in both healthy young men and older men (≥ 60 years), with the greatest benefit seen in the older men who had lower lean mass and higher fat mass at baseline.

The other was a post hoc analysis of a phase 3 clinical trial of 3 mg/d oral enobosarm for the treatment of muscle wasting in advanced lung cancer. Here, a subset of participants who were aged ≥ 60 years and had obesity also showed reductions in fat mass and preservation of lean body mass with the drug compared with placebo, leading to “high-quality weight loss.”

Endocrinologist Adrian Dobs, MD, professor of medicine and oncology at Johns Hopkins University Medical School, Baltimore, an investigator on both of the Veru-sponsored studies, told Medscape Medical News, “The wishful thinking about these drugs has been around for quite a while, particularly in the cancer population or ... in a frail population. The hope was, wouldn’t it be nice if there was a drug that built up muscle mass? Certainly, we know that going into the gym does that but looking for some medication had been the goal. The thought was this class of medication would have a muscle-building effect, an anabolic effect without an androgenic effect causing masculinization.”

The problem with those studies in terms of regulatory approval, Dr. Dobs said, was defining the endpoints. “The [US Food and Drug Administration] is very interested in functional status. You can show that there is an increase in muscle mass. But to take that leap and show that a person can walk upstairs, carry groceries, and be more functionally able is hard to prove.”

And she noted that bringing frail elderly people into clinical trials isn’t easy. But now, “this is an interesting new avenue of scientific pursuit, looking at this particular population that is losing weight due to GLP-1 [agonists]. Now we’re dealing with high numbers of patients who are easy to identify because they’re taking those medications.”

“We have to also focus on ‘first, do no harm’”

Asked to comment, Angela Fitch, MD, associate director of the Massachusetts General Hospital Weight Center, Boston, expressed caution. “We have to remember that it is not all about muscle mass. Maintaining muscle mass with weight loss is obviously important, but even today, with 30% of the weight loss coming from lean mass, which is not the same as muscle, there are huge benefits from fat loss, including cardiovascular and cancer risk reduction, increased life increased life expectancy, and diabetes remission.”

Moreover, Dr. Fitch pointed out, SARMs have been linked to increased cardiovascular events and blood clots.

“So, we have to also focus on ‘first, do no harm’. A lot of these muscle-promoting medications have been associated with increased risk of other things. So, it is going to take a lot of time and testing to be sure they are safe. While I am supportive of research to look into these risks vs benefits, we have to be mindful of the risks and recognize that in most cases of weight loss in people with obesity losing some lean mass is acceptable and the benefits of fat loss outweigh the risks of lean loss, especially if people are doing resistance exercise and maintaining strength.”

“Wherever the GLP-1s go, we go”

In an investor call held on May 8, 2024, Veru’s Chairman, CEO, and President Mitchell Steiner, MD, said that the current phase 2b study of enobosarm with semaglutide is only examining people aged ≥ 60 years to maximize the functional outcome benefit. But phase 3, he anticipates, will be “all comers, for sure. And then we’ll embed special populations.” The thinking, he said, is “Wherever the GLP-1s go, we go.”

Fitch has participated on advisory boards for Jenny Craig, Novo Nordisk, Eli Lily, Sidekick Health, and Vivus. Dobs had no disclosures beyond conducting research for Veru.
 

A version of this article appeared on Medscape.com.

NEW ORLEANS — Medications in development would preserve muscle mass and augment fat loss when used in combination with glucagon-like peptide 1 (GLP-1) receptor agonists taken for weight loss.

As drugs such as semaglutide (Wegovy) and the dual agonist glucose-dependent insulinotropic polypeptide (GIP)/GLP-1 tirzepatide (Zepbound) are producing unprecedented degrees of weight loss in increasing numbers of people, concern has arisen about the proportion of the lost weight, approximately 30%-50%, that is beneficial lean body mass vs fat mass. While some loss of muscle mass is expected with any rapid overall weight loss, it’s not clear what long-term effect that may have on physical function, bone density, and longevity, particularly in older adults with sarcopenic obesity who are at risk for muscle atrophy and frailty.

Several drugs in various stages of development are aimed at preserving or building muscle mass and boosting fat loss when used in combination with one of these medications for weight loss. Trials now underway will need to show improved function — not just increased muscle — and also establish safety, experts told this news organization.

One such agent is Veru Inc.’s oral selective androgen receptor modulator (SARM) enobosarm, currently in a phase 2b clinical trial for use with semaglutide in people who are at risk for muscle atrophy and weakness.

Also in a phase 2b trial for use with semaglutide is the antimyostatin intravenous agent bimagrumab. In July 2023, Eli Lilly purchased Versanis, the company that was developing that drug. Previous phase 2 data on bimagrumab alone vs placebo in people with obesity and type 2 diabetes showed improvement in muscle mass with greater fat loss but also produced a signal for pancreatitis requiring further evaluation.

Scholar Rock’s intravenous antimyostatin apitegromab is also now in a phase 2 trial and Biohaven Pharmaceuticals is expected to launch a phase 2 trial of its subcutaneous antimyostatin taldefgrobep alfa later this year.

Most of these and other similar agents have also been under investigation for use in one or more other muscle-losing conditions including spinal muscular atrophy, sarcopenia, and cancer.

“Wouldn’t it be nice if there was a drug that built up muscle mass?”

Data presented in two late-breaking posters at the annual meeting of the American Association of Clinical Endocrinology meeting held May 9-11, 2024, laid the groundwork for the subsequent phase 2 studies of enobosarm in combination with a GLP-1 RA. One showed increases in total lean mass and decreases in total fat mass with 3 mg enobosarm for 14 days compared with placebo in both healthy young men and older men (≥ 60 years), with the greatest benefit seen in the older men who had lower lean mass and higher fat mass at baseline.

The other was a post hoc analysis of a phase 3 clinical trial of 3 mg/d oral enobosarm for the treatment of muscle wasting in advanced lung cancer. Here, a subset of participants who were aged ≥ 60 years and had obesity also showed reductions in fat mass and preservation of lean body mass with the drug compared with placebo, leading to “high-quality weight loss.”

Endocrinologist Adrian Dobs, MD, professor of medicine and oncology at Johns Hopkins University Medical School, Baltimore, an investigator on both of the Veru-sponsored studies, told Medscape Medical News, “The wishful thinking about these drugs has been around for quite a while, particularly in the cancer population or ... in a frail population. The hope was, wouldn’t it be nice if there was a drug that built up muscle mass? Certainly, we know that going into the gym does that but looking for some medication had been the goal. The thought was this class of medication would have a muscle-building effect, an anabolic effect without an androgenic effect causing masculinization.”

The problem with those studies in terms of regulatory approval, Dr. Dobs said, was defining the endpoints. “The [US Food and Drug Administration] is very interested in functional status. You can show that there is an increase in muscle mass. But to take that leap and show that a person can walk upstairs, carry groceries, and be more functionally able is hard to prove.”

And she noted that bringing frail elderly people into clinical trials isn’t easy. But now, “this is an interesting new avenue of scientific pursuit, looking at this particular population that is losing weight due to GLP-1 [agonists]. Now we’re dealing with high numbers of patients who are easy to identify because they’re taking those medications.”

“We have to also focus on ‘first, do no harm’”

Asked to comment, Angela Fitch, MD, associate director of the Massachusetts General Hospital Weight Center, Boston, expressed caution. “We have to remember that it is not all about muscle mass. Maintaining muscle mass with weight loss is obviously important, but even today, with 30% of the weight loss coming from lean mass, which is not the same as muscle, there are huge benefits from fat loss, including cardiovascular and cancer risk reduction, increased life increased life expectancy, and diabetes remission.”

Moreover, Dr. Fitch pointed out, SARMs have been linked to increased cardiovascular events and blood clots.

“So, we have to also focus on ‘first, do no harm’. A lot of these muscle-promoting medications have been associated with increased risk of other things. So, it is going to take a lot of time and testing to be sure they are safe. While I am supportive of research to look into these risks vs benefits, we have to be mindful of the risks and recognize that in most cases of weight loss in people with obesity losing some lean mass is acceptable and the benefits of fat loss outweigh the risks of lean loss, especially if people are doing resistance exercise and maintaining strength.”

“Wherever the GLP-1s go, we go”

In an investor call held on May 8, 2024, Veru’s Chairman, CEO, and President Mitchell Steiner, MD, said that the current phase 2b study of enobosarm with semaglutide is only examining people aged ≥ 60 years to maximize the functional outcome benefit. But phase 3, he anticipates, will be “all comers, for sure. And then we’ll embed special populations.” The thinking, he said, is “Wherever the GLP-1s go, we go.”

Fitch has participated on advisory boards for Jenny Craig, Novo Nordisk, Eli Lily, Sidekick Health, and Vivus. Dobs had no disclosures beyond conducting research for Veru.
 

A version of this article appeared on Medscape.com.

According to the Centers for Disease Control and Prevention (CDC), over 684,000 Americans are diagnosed with an “obesity-associated” cancer each year.

The incidence of many of these cancers has been rising in recent years, particularly among younger people — a trend that sits in contrast with the overall decline in cancers with no established relationship to excess weight, such as lung and skin cancers. 

Is obesity the new smoking? Not exactly.

Tracing a direct line between excess fat and cancer is much less clear-cut than it is with tobacco. While about 42% of cancers — including common ones such as colorectal and postmenopausal breast cancers — are considered obesity-related, only about 8% of incident cancers are attributed to excess body weight. People often develop those diseases regardless of weight.

Although plenty of evidence points to excess body fat as a cancer risk factor, it’s unclear at what point excess weight has an effect. Is gaining weight later in life, for instance, better or worse for cancer risk than being overweight or obese from a young age?

There’s another glaring knowledge gap: Does losing weight at some point in adulthood change the picture? In other words, how many of those 684,000 diagnoses might have been prevented if people shed excess pounds?

When it comes to weight and cancer risk, “there’s a lot we don’t know,” said Jennifer W. Bea, PhD, associate professor, health promotion sciences, University of Arizona, Tucson.

A Consistent but Complicated Relationship

Given the growing incidence of obesity — which currently affects about 42% of US adults and 20% of children and teenagers — it’s no surprise that many studies have delved into the potential effects of excess weight on cancer rates.

Although virtually all the evidence comes from large cohort studies, leaving the cause-effect question open, certain associations keep showing up.

“What we know is that, consistently, a higher body mass index [BMI] — particularly in the obese category — leads to a higher risk of multiple cancers,” said Jeffrey A. Meyerhardt, MD, MPH, codirector, Colon and Rectal Cancer Center, Dana-Farber Cancer Institute, Boston.

In a widely cited report published in The New England Journal of Medicine in 2016, the International Agency for Research on Cancer (IARC) analyzed over 1000 epidemiologic studies on body fat and cancer. The agency pointed to over a dozen cancers, including some of the most common and deadly, linked to excess body weight.

That list includes esophageal adenocarcinoma and endometrial cancer — associated with the highest risk — along with kidney, liver, stomach (gastric cardia), pancreatic, colorectal, postmenopausal breast, gallbladder, ovarian, and thyroid cancers, plus multiple myeloma and meningioma. There’s also “limited” evidence linking excess weight to additional cancer types, including aggressive prostate cancer and certain head and neck cancers.

At the same time, Dr. Meyerhardt said, many of those same cancers are also associated with issues that lead to, or coexist with, overweight and obesity, including poor diet, lack of exercise, and metabolic conditions such as diabetes. 

It’s a complicated web, and it’s likely, Dr. Meyerhardt said, that high BMI both directly affects cancer risk and is part of a “causal pathway” of other factors that do.

Regarding direct effects, preclinical research has pointed to multiple ways in which excess body fat could contribute to cancer, said Karen M. Basen-Engquist, PhD, MPH, professor, Division of Cancer Prevention and Population Services, The University of Texas MD Anderson Cancer Center, Houston.

One broad mechanism to help explain the obesity-cancer link is chronic systemic inflammation because excess fat tissue can raise levels of substances in the body, such as tumor necrosis factor alpha and interleukin 6, which fuel inflammation. Excess fat also contributes to hyperinsulinemia — too much insulin in the blood — which can help promote the growth and spread of tumor cells. 

But the underlying reasons also appear to vary by cancer type, Dr. Basen-Engquist said. With hormonally driven cancer types, such as breast and endometrial, excess body fat may alter hormone levels in ways that spur tumor growth. Extra fat tissue may, for example, convert androgens into estrogens, which could help feed estrogen-dependent tumors.

That, Dr. Basen-Engquist noted, could be why excess weight is associated with postmenopausal, not premenopausal, breast cancer: Before menopause, body fat is a relatively minor contributor to estrogen levels but becomes more important after menopause.

How Big Is the Effect?

While more than a dozen cancers have been consistently linked to excess weight, the strength of those associations varies considerably. 

Endometrial and esophageal cancers are two that stand out. In the 2016 IARC analysis, people with severe obesity had a seven-times greater risk for endometrial cancer and 4.8-times greater risk for esophageal adenocarcinoma vs people with a normal BMI.

With other cancers, the risk increases for those with severe obesity compared with a normal BMI were far more modest: 10% for ovarian cancer, 30% for colorectal cancer, and 80% for kidney and stomach cancers, for example. For postmenopausal breast cancer, every five-unit increase in BMI was associated with a 10% relative risk increase.

A 2018 study from the American Cancer Society, which attempted to estimate the proportion of cancers in the United States attributable to modifiable risk factors — including alcohol consumption, ultraviolet rays exposure, and physical inactivity — found that smoking accounted for the highest proportion of cancer cases by a wide margin (19%), but excess weight came in second (7.8%).

Again, weight appeared to play a bigger role in certain cancers than others: An estimated 60% of endometrial cancers were linked to excess weight, as were roughly one third of esophageal, kidney, and liver cancers. At the other end of the spectrum, just over 11% of breast, 5% of colorectal, and 4% of ovarian cancers were attributable to excess weight.

Even at the lower end, those rates could make a big difference on the population level, especially for groups with higher rates of obesity.

CDC data show that obesity-related cancers are rising among women younger than 50 years, most rapidly among Hispanic women, and some less common obesity-related cancers, such as stomach, thyroid and pancreatic, are also rising among Black individuals and Hispanic Americans.

Obesity may be one reason for growing cancer disparities, said Leah Ferrucci, PhD, MPH, assistant professor, epidemiology, Yale School of Public Health, New Haven, Connecticut. But, she added, the evidence is limited because Black individuals and Hispanic Americans are understudied.

When Do Extra Pounds Matter?

When it comes to cancer risk, at what point in life does excess weight, or weight gain, matter? Is the standard weight gain in middle age, for instance, as hazardous as being overweight or obese from a young age?

Some evidence suggests there’s no “safe” time for putting on excess pounds.

A recent meta-analysis concluded that weight gain at any point after age 18 years is associated with incremental increases in the risk for postmenopausal breast cancer. A 2023 study in JAMA Network Open found a similar pattern with colorectal and other gastrointestinal cancers: People who had sustained overweight or obesity from age 20 years through middle age faced an increased risk of developing those cancers after age 55 years. 

The timing of weight gain didn’t seem to matter either. The same elevated risk held among people who were normal weight in their younger years but became overweight after age 55 years.

Those studies focused on later-onset disease. But, in recent years, experts have tracked a troubling rise in early-onset cancers — those diagnosed before age 50 years — particularly gastrointestinal cancers. 

An obvious question, Dr. Meyerhardt said, is whether the growing prevalence of obesity among young people is partly to blame.

There’s some data to support that, he said. An analysis from the Nurses’ Health Study II found that women with obesity had double the risk for early-onset colorectal cancer as those with a normal BMI. And every 5-kg increase in weight after age 18 years was associated with a 9% increase in colorectal cancer risk.

But while obesity trends probably partly explain the rise in early-onset cancers, there is likely more to the story, Dr. Meyerhardt said.

“I think all of us who see an increasing number of patients under 50 with colorectal cancer know there’s a fair number who do not fit that [high BMI] profile,” he said. “There’s a fair number over 50 who don’t either.”

Does Weight Loss Help?

With all the evidence pointing to high BMI as a cancer risk factor, a logical conclusion is that weight loss should reduce that excess risk. However, Dr. Bea said, there’s actually little data to support that, and what exists comes from observational studies.

Some research has focused on people who had substantial weight loss after bariatric surgery, with encouraging results. A study published in JAMA found that among 5053 people who underwent bariatric surgery, 2.9% developed an obesity-related cancer over 10 years compared with 4.9% in the nonsurgery group.

Most people, however, aim for less dramatic weight loss, with the help of diet and exercise or sometimes medication. Some evidence shows that a modest degree of weight loss may lower the risks for postmenopausal breast and endometrial cancers. 

A 2020 pooled analysis found, for instance, that among women aged ≥ 50 years, those who lost as little as 2.0-4.5 kg, or 4.4-10.0 pounds, and kept it off for 10 years had a lower risk for breast cancer than women whose weight remained stable. And losing more weight — 9 kg, or about 20 pounds, or more — was even better for lowering cancer risk.

But other research suggests the opposite. A recent analysis found that people who lost weight within the past 2 years through diet and exercise had a higher risk for a range of cancers compared with those who did not lose weight. Overall, though, the increased risk was quite low.

Whatever the research does, or doesn’t, show about weight and cancer risk, Dr. Basen-Engquist said, it’s important that risk factors, obesity and otherwise, aren’t “used as blame tools.”

“With obesity, behavior certainly plays into it,” she said. “But there are so many influences on our behavior that are socially determined.”

Both Dr. Basen-Engquist and Dr. Meyerhardt said it’s important for clinicians to consider the individual in front of them and for everyone to set realistic expectations. 

People with obesity should not feel they have to become thin to be healthier, and no one has to leap from being sedentary to exercising several hours a week. 

“We don’t want patients to feel that if they don’t get to a stated goal in a guideline, it’s all for naught,” Dr. Meyerhardt said.

A version of this article appeared on Medscape.com.

According to the Centers for Disease Control and Prevention (CDC), over 684,000 Americans are diagnosed with an “obesity-associated” cancer each year.

The incidence of many of these cancers has been rising in recent years, particularly among younger people — a trend that sits in contrast with the overall decline in cancers with no established relationship to excess weight, such as lung and skin cancers. 

Is obesity the new smoking? Not exactly.

Tracing a direct line between excess fat and cancer is much less clear-cut than it is with tobacco. While about 42% of cancers — including common ones such as colorectal and postmenopausal breast cancers — are considered obesity-related, only about 8% of incident cancers are attributed to excess body weight. People often develop those diseases regardless of weight.

Although plenty of evidence points to excess body fat as a cancer risk factor, it’s unclear at what point excess weight has an effect. Is gaining weight later in life, for instance, better or worse for cancer risk than being overweight or obese from a young age?

There’s another glaring knowledge gap: Does losing weight at some point in adulthood change the picture? In other words, how many of those 684,000 diagnoses might have been prevented if people shed excess pounds?

When it comes to weight and cancer risk, “there’s a lot we don’t know,” said Jennifer W. Bea, PhD, associate professor, health promotion sciences, University of Arizona, Tucson.

A Consistent but Complicated Relationship

Given the growing incidence of obesity — which currently affects about 42% of US adults and 20% of children and teenagers — it’s no surprise that many studies have delved into the potential effects of excess weight on cancer rates.

Although virtually all the evidence comes from large cohort studies, leaving the cause-effect question open, certain associations keep showing up.

“What we know is that, consistently, a higher body mass index [BMI] — particularly in the obese category — leads to a higher risk of multiple cancers,” said Jeffrey A. Meyerhardt, MD, MPH, codirector, Colon and Rectal Cancer Center, Dana-Farber Cancer Institute, Boston.

In a widely cited report published in The New England Journal of Medicine in 2016, the International Agency for Research on Cancer (IARC) analyzed over 1000 epidemiologic studies on body fat and cancer. The agency pointed to over a dozen cancers, including some of the most common and deadly, linked to excess body weight.

That list includes esophageal adenocarcinoma and endometrial cancer — associated with the highest risk — along with kidney, liver, stomach (gastric cardia), pancreatic, colorectal, postmenopausal breast, gallbladder, ovarian, and thyroid cancers, plus multiple myeloma and meningioma. There’s also “limited” evidence linking excess weight to additional cancer types, including aggressive prostate cancer and certain head and neck cancers.

At the same time, Dr. Meyerhardt said, many of those same cancers are also associated with issues that lead to, or coexist with, overweight and obesity, including poor diet, lack of exercise, and metabolic conditions such as diabetes. 

It’s a complicated web, and it’s likely, Dr. Meyerhardt said, that high BMI both directly affects cancer risk and is part of a “causal pathway” of other factors that do.

Regarding direct effects, preclinical research has pointed to multiple ways in which excess body fat could contribute to cancer, said Karen M. Basen-Engquist, PhD, MPH, professor, Division of Cancer Prevention and Population Services, The University of Texas MD Anderson Cancer Center, Houston.

One broad mechanism to help explain the obesity-cancer link is chronic systemic inflammation because excess fat tissue can raise levels of substances in the body, such as tumor necrosis factor alpha and interleukin 6, which fuel inflammation. Excess fat also contributes to hyperinsulinemia — too much insulin in the blood — which can help promote the growth and spread of tumor cells. 

But the underlying reasons also appear to vary by cancer type, Dr. Basen-Engquist said. With hormonally driven cancer types, such as breast and endometrial, excess body fat may alter hormone levels in ways that spur tumor growth. Extra fat tissue may, for example, convert androgens into estrogens, which could help feed estrogen-dependent tumors.

That, Dr. Basen-Engquist noted, could be why excess weight is associated with postmenopausal, not premenopausal, breast cancer: Before menopause, body fat is a relatively minor contributor to estrogen levels but becomes more important after menopause.

How Big Is the Effect?

While more than a dozen cancers have been consistently linked to excess weight, the strength of those associations varies considerably. 

Endometrial and esophageal cancers are two that stand out. In the 2016 IARC analysis, people with severe obesity had a seven-times greater risk for endometrial cancer and 4.8-times greater risk for esophageal adenocarcinoma vs people with a normal BMI.

With other cancers, the risk increases for those with severe obesity compared with a normal BMI were far more modest: 10% for ovarian cancer, 30% for colorectal cancer, and 80% for kidney and stomach cancers, for example. For postmenopausal breast cancer, every five-unit increase in BMI was associated with a 10% relative risk increase.

A 2018 study from the American Cancer Society, which attempted to estimate the proportion of cancers in the United States attributable to modifiable risk factors — including alcohol consumption, ultraviolet rays exposure, and physical inactivity — found that smoking accounted for the highest proportion of cancer cases by a wide margin (19%), but excess weight came in second (7.8%).

Again, weight appeared to play a bigger role in certain cancers than others: An estimated 60% of endometrial cancers were linked to excess weight, as were roughly one third of esophageal, kidney, and liver cancers. At the other end of the spectrum, just over 11% of breast, 5% of colorectal, and 4% of ovarian cancers were attributable to excess weight.

Even at the lower end, those rates could make a big difference on the population level, especially for groups with higher rates of obesity.

CDC data show that obesity-related cancers are rising among women younger than 50 years, most rapidly among Hispanic women, and some less common obesity-related cancers, such as stomach, thyroid and pancreatic, are also rising among Black individuals and Hispanic Americans.

Obesity may be one reason for growing cancer disparities, said Leah Ferrucci, PhD, MPH, assistant professor, epidemiology, Yale School of Public Health, New Haven, Connecticut. But, she added, the evidence is limited because Black individuals and Hispanic Americans are understudied.

When Do Extra Pounds Matter?

When it comes to cancer risk, at what point in life does excess weight, or weight gain, matter? Is the standard weight gain in middle age, for instance, as hazardous as being overweight or obese from a young age?

Some evidence suggests there’s no “safe” time for putting on excess pounds.

A recent meta-analysis concluded that weight gain at any point after age 18 years is associated with incremental increases in the risk for postmenopausal breast cancer. A 2023 study in JAMA Network Open found a similar pattern with colorectal and other gastrointestinal cancers: People who had sustained overweight or obesity from age 20 years through middle age faced an increased risk of developing those cancers after age 55 years. 

The timing of weight gain didn’t seem to matter either. The same elevated risk held among people who were normal weight in their younger years but became overweight after age 55 years.

Those studies focused on later-onset disease. But, in recent years, experts have tracked a troubling rise in early-onset cancers — those diagnosed before age 50 years — particularly gastrointestinal cancers. 

An obvious question, Dr. Meyerhardt said, is whether the growing prevalence of obesity among young people is partly to blame.

There’s some data to support that, he said. An analysis from the Nurses’ Health Study II found that women with obesity had double the risk for early-onset colorectal cancer as those with a normal BMI. And every 5-kg increase in weight after age 18 years was associated with a 9% increase in colorectal cancer risk.

But while obesity trends probably partly explain the rise in early-onset cancers, there is likely more to the story, Dr. Meyerhardt said.

“I think all of us who see an increasing number of patients under 50 with colorectal cancer know there’s a fair number who do not fit that [high BMI] profile,” he said. “There’s a fair number over 50 who don’t either.”

Does Weight Loss Help?

With all the evidence pointing to high BMI as a cancer risk factor, a logical conclusion is that weight loss should reduce that excess risk. However, Dr. Bea said, there’s actually little data to support that, and what exists comes from observational studies.

Some research has focused on people who had substantial weight loss after bariatric surgery, with encouraging results. A study published in JAMA found that among 5053 people who underwent bariatric surgery, 2.9% developed an obesity-related cancer over 10 years compared with 4.9% in the nonsurgery group.

Most people, however, aim for less dramatic weight loss, with the help of diet and exercise or sometimes medication. Some evidence shows that a modest degree of weight loss may lower the risks for postmenopausal breast and endometrial cancers. 

A 2020 pooled analysis found, for instance, that among women aged ≥ 50 years, those who lost as little as 2.0-4.5 kg, or 4.4-10.0 pounds, and kept it off for 10 years had a lower risk for breast cancer than women whose weight remained stable. And losing more weight — 9 kg, or about 20 pounds, or more — was even better for lowering cancer risk.

But other research suggests the opposite. A recent analysis found that people who lost weight within the past 2 years through diet and exercise had a higher risk for a range of cancers compared with those who did not lose weight. Overall, though, the increased risk was quite low.

Whatever the research does, or doesn’t, show about weight and cancer risk, Dr. Basen-Engquist said, it’s important that risk factors, obesity and otherwise, aren’t “used as blame tools.”

“With obesity, behavior certainly plays into it,” she said. “But there are so many influences on our behavior that are socially determined.”

Both Dr. Basen-Engquist and Dr. Meyerhardt said it’s important for clinicians to consider the individual in front of them and for everyone to set realistic expectations. 

People with obesity should not feel they have to become thin to be healthier, and no one has to leap from being sedentary to exercising several hours a week. 

“We don’t want patients to feel that if they don’t get to a stated goal in a guideline, it’s all for naught,” Dr. Meyerhardt said.

A version of this article appeared on Medscape.com.

According to the Centers for Disease Control and Prevention (CDC), over 684,000 Americans are diagnosed with an “obesity-associated” cancer each year.

The incidence of many of these cancers has been rising in recent years, particularly among younger people — a trend that sits in contrast with the overall decline in cancers with no established relationship to excess weight, such as lung and skin cancers. 

Is obesity the new smoking? Not exactly.

Tracing a direct line between excess fat and cancer is much less clear-cut than it is with tobacco. While about 42% of cancers — including common ones such as colorectal and postmenopausal breast cancers — are considered obesity-related, only about 8% of incident cancers are attributed to excess body weight. People often develop those diseases regardless of weight.

Although plenty of evidence points to excess body fat as a cancer risk factor, it’s unclear at what point excess weight has an effect. Is gaining weight later in life, for instance, better or worse for cancer risk than being overweight or obese from a young age?

There’s another glaring knowledge gap: Does losing weight at some point in adulthood change the picture? In other words, how many of those 684,000 diagnoses might have been prevented if people shed excess pounds?

When it comes to weight and cancer risk, “there’s a lot we don’t know,” said Jennifer W. Bea, PhD, associate professor, health promotion sciences, University of Arizona, Tucson.

A Consistent but Complicated Relationship

Given the growing incidence of obesity — which currently affects about 42% of US adults and 20% of children and teenagers — it’s no surprise that many studies have delved into the potential effects of excess weight on cancer rates.

Although virtually all the evidence comes from large cohort studies, leaving the cause-effect question open, certain associations keep showing up.

“What we know is that, consistently, a higher body mass index [BMI] — particularly in the obese category — leads to a higher risk of multiple cancers,” said Jeffrey A. Meyerhardt, MD, MPH, codirector, Colon and Rectal Cancer Center, Dana-Farber Cancer Institute, Boston.

In a widely cited report published in The New England Journal of Medicine in 2016, the International Agency for Research on Cancer (IARC) analyzed over 1000 epidemiologic studies on body fat and cancer. The agency pointed to over a dozen cancers, including some of the most common and deadly, linked to excess body weight.

That list includes esophageal adenocarcinoma and endometrial cancer — associated with the highest risk — along with kidney, liver, stomach (gastric cardia), pancreatic, colorectal, postmenopausal breast, gallbladder, ovarian, and thyroid cancers, plus multiple myeloma and meningioma. There’s also “limited” evidence linking excess weight to additional cancer types, including aggressive prostate cancer and certain head and neck cancers.

At the same time, Dr. Meyerhardt said, many of those same cancers are also associated with issues that lead to, or coexist with, overweight and obesity, including poor diet, lack of exercise, and metabolic conditions such as diabetes. 

It’s a complicated web, and it’s likely, Dr. Meyerhardt said, that high BMI both directly affects cancer risk and is part of a “causal pathway” of other factors that do.

Regarding direct effects, preclinical research has pointed to multiple ways in which excess body fat could contribute to cancer, said Karen M. Basen-Engquist, PhD, MPH, professor, Division of Cancer Prevention and Population Services, The University of Texas MD Anderson Cancer Center, Houston.

One broad mechanism to help explain the obesity-cancer link is chronic systemic inflammation because excess fat tissue can raise levels of substances in the body, such as tumor necrosis factor alpha and interleukin 6, which fuel inflammation. Excess fat also contributes to hyperinsulinemia — too much insulin in the blood — which can help promote the growth and spread of tumor cells. 

But the underlying reasons also appear to vary by cancer type, Dr. Basen-Engquist said. With hormonally driven cancer types, such as breast and endometrial, excess body fat may alter hormone levels in ways that spur tumor growth. Extra fat tissue may, for example, convert androgens into estrogens, which could help feed estrogen-dependent tumors.

That, Dr. Basen-Engquist noted, could be why excess weight is associated with postmenopausal, not premenopausal, breast cancer: Before menopause, body fat is a relatively minor contributor to estrogen levels but becomes more important after menopause.

How Big Is the Effect?

While more than a dozen cancers have been consistently linked to excess weight, the strength of those associations varies considerably. 

Endometrial and esophageal cancers are two that stand out. In the 2016 IARC analysis, people with severe obesity had a seven-times greater risk for endometrial cancer and 4.8-times greater risk for esophageal adenocarcinoma vs people with a normal BMI.

With other cancers, the risk increases for those with severe obesity compared with a normal BMI were far more modest: 10% for ovarian cancer, 30% for colorectal cancer, and 80% for kidney and stomach cancers, for example. For postmenopausal breast cancer, every five-unit increase in BMI was associated with a 10% relative risk increase.

A 2018 study from the American Cancer Society, which attempted to estimate the proportion of cancers in the United States attributable to modifiable risk factors — including alcohol consumption, ultraviolet rays exposure, and physical inactivity — found that smoking accounted for the highest proportion of cancer cases by a wide margin (19%), but excess weight came in second (7.8%).

Again, weight appeared to play a bigger role in certain cancers than others: An estimated 60% of endometrial cancers were linked to excess weight, as were roughly one third of esophageal, kidney, and liver cancers. At the other end of the spectrum, just over 11% of breast, 5% of colorectal, and 4% of ovarian cancers were attributable to excess weight.

Even at the lower end, those rates could make a big difference on the population level, especially for groups with higher rates of obesity.

CDC data show that obesity-related cancers are rising among women younger than 50 years, most rapidly among Hispanic women, and some less common obesity-related cancers, such as stomach, thyroid and pancreatic, are also rising among Black individuals and Hispanic Americans.

Obesity may be one reason for growing cancer disparities, said Leah Ferrucci, PhD, MPH, assistant professor, epidemiology, Yale School of Public Health, New Haven, Connecticut. But, she added, the evidence is limited because Black individuals and Hispanic Americans are understudied.

When Do Extra Pounds Matter?

When it comes to cancer risk, at what point in life does excess weight, or weight gain, matter? Is the standard weight gain in middle age, for instance, as hazardous as being overweight or obese from a young age?

Some evidence suggests there’s no “safe” time for putting on excess pounds.

A recent meta-analysis concluded that weight gain at any point after age 18 years is associated with incremental increases in the risk for postmenopausal breast cancer. A 2023 study in JAMA Network Open found a similar pattern with colorectal and other gastrointestinal cancers: People who had sustained overweight or obesity from age 20 years through middle age faced an increased risk of developing those cancers after age 55 years. 

The timing of weight gain didn’t seem to matter either. The same elevated risk held among people who were normal weight in their younger years but became overweight after age 55 years.

Those studies focused on later-onset disease. But, in recent years, experts have tracked a troubling rise in early-onset cancers — those diagnosed before age 50 years — particularly gastrointestinal cancers. 

An obvious question, Dr. Meyerhardt said, is whether the growing prevalence of obesity among young people is partly to blame.

There’s some data to support that, he said. An analysis from the Nurses’ Health Study II found that women with obesity had double the risk for early-onset colorectal cancer as those with a normal BMI. And every 5-kg increase in weight after age 18 years was associated with a 9% increase in colorectal cancer risk.

But while obesity trends probably partly explain the rise in early-onset cancers, there is likely more to the story, Dr. Meyerhardt said.

“I think all of us who see an increasing number of patients under 50 with colorectal cancer know there’s a fair number who do not fit that [high BMI] profile,” he said. “There’s a fair number over 50 who don’t either.”

Does Weight Loss Help?

With all the evidence pointing to high BMI as a cancer risk factor, a logical conclusion is that weight loss should reduce that excess risk. However, Dr. Bea said, there’s actually little data to support that, and what exists comes from observational studies.

Some research has focused on people who had substantial weight loss after bariatric surgery, with encouraging results. A study published in JAMA found that among 5053 people who underwent bariatric surgery, 2.9% developed an obesity-related cancer over 10 years compared with 4.9% in the nonsurgery group.

Most people, however, aim for less dramatic weight loss, with the help of diet and exercise or sometimes medication. Some evidence shows that a modest degree of weight loss may lower the risks for postmenopausal breast and endometrial cancers. 

A 2020 pooled analysis found, for instance, that among women aged ≥ 50 years, those who lost as little as 2.0-4.5 kg, or 4.4-10.0 pounds, and kept it off for 10 years had a lower risk for breast cancer than women whose weight remained stable. And losing more weight — 9 kg, or about 20 pounds, or more — was even better for lowering cancer risk.

But other research suggests the opposite. A recent analysis found that people who lost weight within the past 2 years through diet and exercise had a higher risk for a range of cancers compared with those who did not lose weight. Overall, though, the increased risk was quite low.

Whatever the research does, or doesn’t, show about weight and cancer risk, Dr. Basen-Engquist said, it’s important that risk factors, obesity and otherwise, aren’t “used as blame tools.”

“With obesity, behavior certainly plays into it,” she said. “But there are so many influences on our behavior that are socially determined.”

Both Dr. Basen-Engquist and Dr. Meyerhardt said it’s important for clinicians to consider the individual in front of them and for everyone to set realistic expectations. 

People with obesity should not feel they have to become thin to be healthier, and no one has to leap from being sedentary to exercising several hours a week. 

“We don’t want patients to feel that if they don’t get to a stated goal in a guideline, it’s all for naught,” Dr. Meyerhardt said.

A version of this article appeared on Medscape.com.

Approximately one-quarter of mothers with diabetes failed induction of labor, and this failure was associated with a range of adverse outcomes for mothers and infants, based on data from more than 2,000 individuals.

Uncontrolled diabetes remains a risk factor for cesarean delivery, Ali Alhousseini, MD, of Corewell Health East, Dearborn, Michigan, and colleagues wrote in a study presented at the annual clinical and scientific meeting of the American College of Obstetricians and Gynecologists.

“Identifying and stratifying associated risk factors for failed induction of labor [IOL] may improve counseling and intrapartum care,” the researchers wrote in their abstract.

The researchers reviewed data from 2,172 mothers with diabetes who underwent IOL at a single university medical center between January 2013 and December 2021. They examined a range of maternal characteristics including age, ethnicity, gestational age, medical comorbidities, insulin administration, parity, and health insurance.

A total of 567 mothers with diabetes (26.1%) failed IOL and underwent cesarean delivery.

Overall, failed IOL was significantly associated with nulliparity (P = .0001), as well as preexisting diabetes compared with gestational diabetes, diabetes control with insulin, maternal essential hypertension, preeclampsia, and polyhydramnios (P = .001 for all). Other factors significantly associated with failed IOL included prenatal diagnosis of fetal growth restriction (P = .008), and placental abnormalities (P = .027).

Neonatal factors of weight, large for gestational age, head circumference, and height were not significantly associated with failed IOL (P > .05 for all).

As for neonatal outcomes, failed IOL was significantly associated with admission to neonatal intensive care unit, hyperbilirubinemia, and longer hospital stay (P = .001 for all). Failed IOL was significantly associated with lower 1-minute APGAR scores, but not with lower 5-minute APGAR scores, the researchers noted (P = .033 for 1-minute score). No association was noted between failed IOL and neonatal readmission, lower umbilical cord pH value, or maternal ethnicity.

The findings were limited by the retrospective design, but data analysis is ongoing, Dr. Alhousseini said. The researchers are continuing to assess the roles not only of optimal glucose control, but other maternal factors in improving maternal and neonatal outcomes, he said.
 

Data Add to Awareness of Risk Factors

The current study is important because of the increasing incidence of diabetes and the need to examine associated risk factors in pregnancy, Michael Richley, MD, a maternal fetal medicine physician at the University of Washington, Seattle, said in an interview. “The average age of onset of diabetes is becoming younger and type 2 diabetes in pregnancy is an increasingly common diagnosis,” said Dr. Richley, who was not involved in the study.  

The increase in both maternal and neonatal adverse outcomes is expected given the risk factors identified in the study, said Dr. Richley. “The patients with diabetes also were sicker at baseline, with hypertensive disorders, growth restriction, and pregestational diabetes,” he noted.

The study findings support data from previous research, Dr. Richley said. The message to clinicians is that patients with diabetes not only have an increased risk of needing a cesarean delivery but also have an increased risk of poor outcomes if a cesarean delivery is needed, he said.

Although a prospective study would be useful to show causality as opposed to just an association, such a study is challenging in this patient population given the limitations of conducting research on labor and delivery, he said.

The study received no outside funding. The researchers and Dr. Richley had no financial conflicts to disclose.

Approximately one-quarter of mothers with diabetes failed induction of labor, and this failure was associated with a range of adverse outcomes for mothers and infants, based on data from more than 2,000 individuals.

Uncontrolled diabetes remains a risk factor for cesarean delivery, Ali Alhousseini, MD, of Corewell Health East, Dearborn, Michigan, and colleagues wrote in a study presented at the annual clinical and scientific meeting of the American College of Obstetricians and Gynecologists.

“Identifying and stratifying associated risk factors for failed induction of labor [IOL] may improve counseling and intrapartum care,” the researchers wrote in their abstract.

The researchers reviewed data from 2,172 mothers with diabetes who underwent IOL at a single university medical center between January 2013 and December 2021. They examined a range of maternal characteristics including age, ethnicity, gestational age, medical comorbidities, insulin administration, parity, and health insurance.

A total of 567 mothers with diabetes (26.1%) failed IOL and underwent cesarean delivery.

Overall, failed IOL was significantly associated with nulliparity (P = .0001), as well as preexisting diabetes compared with gestational diabetes, diabetes control with insulin, maternal essential hypertension, preeclampsia, and polyhydramnios (P = .001 for all). Other factors significantly associated with failed IOL included prenatal diagnosis of fetal growth restriction (P = .008), and placental abnormalities (P = .027).

Neonatal factors of weight, large for gestational age, head circumference, and height were not significantly associated with failed IOL (P > .05 for all).

As for neonatal outcomes, failed IOL was significantly associated with admission to neonatal intensive care unit, hyperbilirubinemia, and longer hospital stay (P = .001 for all). Failed IOL was significantly associated with lower 1-minute APGAR scores, but not with lower 5-minute APGAR scores, the researchers noted (P = .033 for 1-minute score). No association was noted between failed IOL and neonatal readmission, lower umbilical cord pH value, or maternal ethnicity.

The findings were limited by the retrospective design, but data analysis is ongoing, Dr. Alhousseini said. The researchers are continuing to assess the roles not only of optimal glucose control, but other maternal factors in improving maternal and neonatal outcomes, he said.
 

Data Add to Awareness of Risk Factors

The current study is important because of the increasing incidence of diabetes and the need to examine associated risk factors in pregnancy, Michael Richley, MD, a maternal fetal medicine physician at the University of Washington, Seattle, said in an interview. “The average age of onset of diabetes is becoming younger and type 2 diabetes in pregnancy is an increasingly common diagnosis,” said Dr. Richley, who was not involved in the study.  

The increase in both maternal and neonatal adverse outcomes is expected given the risk factors identified in the study, said Dr. Richley. “The patients with diabetes also were sicker at baseline, with hypertensive disorders, growth restriction, and pregestational diabetes,” he noted.

The study findings support data from previous research, Dr. Richley said. The message to clinicians is that patients with diabetes not only have an increased risk of needing a cesarean delivery but also have an increased risk of poor outcomes if a cesarean delivery is needed, he said.

Although a prospective study would be useful to show causality as opposed to just an association, such a study is challenging in this patient population given the limitations of conducting research on labor and delivery, he said.

The study received no outside funding. The researchers and Dr. Richley had no financial conflicts to disclose.

Approximately one-quarter of mothers with diabetes failed induction of labor, and this failure was associated with a range of adverse outcomes for mothers and infants, based on data from more than 2,000 individuals.

Uncontrolled diabetes remains a risk factor for cesarean delivery, Ali Alhousseini, MD, of Corewell Health East, Dearborn, Michigan, and colleagues wrote in a study presented at the annual clinical and scientific meeting of the American College of Obstetricians and Gynecologists.

“Identifying and stratifying associated risk factors for failed induction of labor [IOL] may improve counseling and intrapartum care,” the researchers wrote in their abstract.

The researchers reviewed data from 2,172 mothers with diabetes who underwent IOL at a single university medical center between January 2013 and December 2021. They examined a range of maternal characteristics including age, ethnicity, gestational age, medical comorbidities, insulin administration, parity, and health insurance.

A total of 567 mothers with diabetes (26.1%) failed IOL and underwent cesarean delivery.

Overall, failed IOL was significantly associated with nulliparity (P = .0001), as well as preexisting diabetes compared with gestational diabetes, diabetes control with insulin, maternal essential hypertension, preeclampsia, and polyhydramnios (P = .001 for all). Other factors significantly associated with failed IOL included prenatal diagnosis of fetal growth restriction (P = .008), and placental abnormalities (P = .027).

Neonatal factors of weight, large for gestational age, head circumference, and height were not significantly associated with failed IOL (P > .05 for all).

As for neonatal outcomes, failed IOL was significantly associated with admission to neonatal intensive care unit, hyperbilirubinemia, and longer hospital stay (P = .001 for all). Failed IOL was significantly associated with lower 1-minute APGAR scores, but not with lower 5-minute APGAR scores, the researchers noted (P = .033 for 1-minute score). No association was noted between failed IOL and neonatal readmission, lower umbilical cord pH value, or maternal ethnicity.

The findings were limited by the retrospective design, but data analysis is ongoing, Dr. Alhousseini said. The researchers are continuing to assess the roles not only of optimal glucose control, but other maternal factors in improving maternal and neonatal outcomes, he said.
 

Data Add to Awareness of Risk Factors

The current study is important because of the increasing incidence of diabetes and the need to examine associated risk factors in pregnancy, Michael Richley, MD, a maternal fetal medicine physician at the University of Washington, Seattle, said in an interview. “The average age of onset of diabetes is becoming younger and type 2 diabetes in pregnancy is an increasingly common diagnosis,” said Dr. Richley, who was not involved in the study.  

The increase in both maternal and neonatal adverse outcomes is expected given the risk factors identified in the study, said Dr. Richley. “The patients with diabetes also were sicker at baseline, with hypertensive disorders, growth restriction, and pregestational diabetes,” he noted.

The study findings support data from previous research, Dr. Richley said. The message to clinicians is that patients with diabetes not only have an increased risk of needing a cesarean delivery but also have an increased risk of poor outcomes if a cesarean delivery is needed, he said.

Although a prospective study would be useful to show causality as opposed to just an association, such a study is challenging in this patient population given the limitations of conducting research on labor and delivery, he said.

The study received no outside funding. The researchers and Dr. Richley had no financial conflicts to disclose.

WASHINGTON — In contrast with a previous study that found glucagon-like peptide 1 (GLP-1) receptor agonists associated with an increased risk for acute pancreatitis and bowel obstruction, a new retrospective study found no significant link to these complications. The new data did, however, reinforce an association between GLP-1s and gastroparesis and biliary disease, specifically gallstones.

One of the big differences from the previous study, published in JAMA in October 2023 by Sodhi and colleagues , is that the current research was able to account for initial body mass index (BMI), said Benjamin Liu, MD, a resident in internal medicine at Case Western Reserve University School of Medicine, Cleveland, Ohio.

This is important, he explained in his presentation (abstract 1074) at the annual Digestive Disease Week^® 2024, because obesity on its own is associated with an increased risk for some of these gastrointestinal (GI) outcomes.

“They did an excellent study,” Dr. Liu said. “But their platform did not allow them to match participants for BMI.”

Another distinction between the two studies is that the JAMA study excluded people who had diabetes 90 days before or 30 days following the start of GLP-1 therapy.

Instead, Dr. Liu said, he and colleague Gengqing Song, MD, “just made it simple” and excluded anyone with diabetes or an A1c ≥ 6.5.

We didn’t want participants with diabetes because “we were looking at GLP-1s for weight loss,” Dr. Liu explained.

Although some clinical trials have already assessed adverse events of these medications, “clinical trials are not always a perfect representation of the real world,” Dr. Liu said in an interview. “So, it’s important to do real-world studies to see just what actually goes on.”
 

Reassessing GI Complications 

In the current study, the researchers identified 105,793 patients from the TriNetX healthcare database taking a GLP-1, either semaglutide or liraglutide, for weight loss and 8794 patients taking 8 mg naltrexone/90 mg bupropion. After propensity matching, including for BMI, there were 8792 patients in each group.

They were identified in the database between 2011 and 2023. Researchers noted their first-ever occurrence of acute pancreatitis, bowel obstruction, gastroparesis, or biliary disease during the study period.

Participants had a BMI ≥ 30 kg/m². In addition to BMI, propensity score matching included demographics, alcohol use, smoking, hyperlipidemia, and abdominal surgery. A second analysis specifically did not match participants for BMI.

The researchers found no significant association between GLP-1s and acute pancreatitis (adjusted hazard ratio [HR], 1.19; 95% CI, 0.66-2.14).

The labeling for semaglutide and liraglutide warns about an increased risk for acute pancreatitis, “but real-world studies and clinical trials are increasingly suggesting there is no increased risk,” Dr. Liu said.

They also did not find a significant association between GLP-1s and bowel obstruction (HR, 1.30; 95% CI, 0.69-2.18).

Despite the current findings, more research — especially prospective data — is needed to confirm pancreatitis as well as other GI risks like bowel obstruction potentially associated with GLP-1s, he added.

The study did, however, find an elevated risk for biliary disease (HR, 1.27; 95% CI, 1.02-1.59) in the BMI-matched cohorts.

This could be due to the rapidity of weight loss, Dr. Liu suggested. “We found that semaglutide caused more weight loss at 6 and 12 months than naltrexone/bupropion, and it did so at a faster rate. That falls in line with other data that suggest if you lose weight too fast, you actually have an increased risk of gallstones,” he said.

Rapid weight loss can release cholesterol into the body, which then collects in the bile ducts and causes gallstones. This risk for gallstone formation with rapid weight loss is also seen after bariatric surgery, Dr. Liu said.

Without BMI matching, he noted, the increased risk for biliary disease was no longer significant (HR, 1.21; 95% CI, 0.96-1.52).

The researchers also reported a significant association between GLP-1s and gastroparesis (HR, 2.30; 95% CI, 1.19-4.46), confirming the results of the JAMA study “but at a much lower incidence rate once we excluded all patients with diabetes,” said Dr. Liu. The JAMA study had a HR of 3.67 for gastroparesis (95% CI, 1.15-11.90).
 

Weighing in on the Results

“Overall, their study design looks sound,” said Mahyar Etminan, PharmD, associate professor of medicine at the University of British Columbia in Vancouver and an author of the JAMA study. He agreed that Dr. Liu’s research confirmed their findings about gastroparesis and biliary disease.

However, “I interpret the results with intestinal obstruction and pancreatitis as more inconclusive than no risk,” he added.

Session co-moderator and gastroenterologist and motility specialist with Stanford Health Care in California, Linda Anh Bui Nguyen, MD, AGAF, said that she thinks “it’s a promising study.

“But with any retrospective study where you’re looking at ICD-10 [International Classification of Diseases, Tenth Revision] codes, it really depends on the coders. The code could be subjective and could be wrong,” said Dr. Nguyen, clinical professor of medicine at Stanford Medical School, California.

For example, the diagnosis of gastroparesis requires a normal endoscopy and a gastric emptying test. “But we find that, frequently, patients are being given a diagnosis of gastroparesis without the test,” she said.

An unanswered question also remains regarding how pancreatitis or biliary disease is being diagnosed: “Was it imaging, lab testing, or symptoms?” she said in an interview. “For example, if patients had pain on the right side, did they call it biliary?”

Dr. Nguyen added that it is difficult to get this kind of detail in retrospective studies. She also agreed with Dr. Liu that prospective studies are warranted.

The study was independently supported. Dr. Liu, Dr. Etminan, and Dr. Nguyen had no relevant financial disclosures.

A version of this article appeared on Medscape.com.

WASHINGTON — In contrast with a previous study that found glucagon-like peptide 1 (GLP-1) receptor agonists associated with an increased risk for acute pancreatitis and bowel obstruction, a new retrospective study found no significant link to these complications. The new data did, however, reinforce an association between GLP-1s and gastroparesis and biliary disease, specifically gallstones.

One of the big differences from the previous study, published in JAMA in October 2023 by Sodhi and colleagues , is that the current research was able to account for initial body mass index (BMI), said Benjamin Liu, MD, a resident in internal medicine at Case Western Reserve University School of Medicine, Cleveland, Ohio.

This is important, he explained in his presentation (abstract 1074) at the annual Digestive Disease Week^® 2024, because obesity on its own is associated with an increased risk for some of these gastrointestinal (GI) outcomes.

“They did an excellent study,” Dr. Liu said. “But their platform did not allow them to match participants for BMI.”

Another distinction between the two studies is that the JAMA study excluded people who had diabetes 90 days before or 30 days following the start of GLP-1 therapy.

Instead, Dr. Liu said, he and colleague Gengqing Song, MD, “just made it simple” and excluded anyone with diabetes or an A1c ≥ 6.5.

We didn’t want participants with diabetes because “we were looking at GLP-1s for weight loss,” Dr. Liu explained.

Although some clinical trials have already assessed adverse events of these medications, “clinical trials are not always a perfect representation of the real world,” Dr. Liu said in an interview. “So, it’s important to do real-world studies to see just what actually goes on.”
 

Reassessing GI Complications 

In the current study, the researchers identified 105,793 patients from the TriNetX healthcare database taking a GLP-1, either semaglutide or liraglutide, for weight loss and 8794 patients taking 8 mg naltrexone/90 mg bupropion. After propensity matching, including for BMI, there were 8792 patients in each group.

They were identified in the database between 2011 and 2023. Researchers noted their first-ever occurrence of acute pancreatitis, bowel obstruction, gastroparesis, or biliary disease during the study period.

Participants had a BMI ≥ 30 kg/m². In addition to BMI, propensity score matching included demographics, alcohol use, smoking, hyperlipidemia, and abdominal surgery. A second analysis specifically did not match participants for BMI.

The researchers found no significant association between GLP-1s and acute pancreatitis (adjusted hazard ratio [HR], 1.19; 95% CI, 0.66-2.14).

The labeling for semaglutide and liraglutide warns about an increased risk for acute pancreatitis, “but real-world studies and clinical trials are increasingly suggesting there is no increased risk,” Dr. Liu said.

They also did not find a significant association between GLP-1s and bowel obstruction (HR, 1.30; 95% CI, 0.69-2.18).

Despite the current findings, more research — especially prospective data — is needed to confirm pancreatitis as well as other GI risks like bowel obstruction potentially associated with GLP-1s, he added.

The study did, however, find an elevated risk for biliary disease (HR, 1.27; 95% CI, 1.02-1.59) in the BMI-matched cohorts.

This could be due to the rapidity of weight loss, Dr. Liu suggested. “We found that semaglutide caused more weight loss at 6 and 12 months than naltrexone/bupropion, and it did so at a faster rate. That falls in line with other data that suggest if you lose weight too fast, you actually have an increased risk of gallstones,” he said.

Rapid weight loss can release cholesterol into the body, which then collects in the bile ducts and causes gallstones. This risk for gallstone formation with rapid weight loss is also seen after bariatric surgery, Dr. Liu said.

Without BMI matching, he noted, the increased risk for biliary disease was no longer significant (HR, 1.21; 95% CI, 0.96-1.52).

The researchers also reported a significant association between GLP-1s and gastroparesis (HR, 2.30; 95% CI, 1.19-4.46), confirming the results of the JAMA study “but at a much lower incidence rate once we excluded all patients with diabetes,” said Dr. Liu. The JAMA study had a HR of 3.67 for gastroparesis (95% CI, 1.15-11.90).
 

Weighing in on the Results

“Overall, their study design looks sound,” said Mahyar Etminan, PharmD, associate professor of medicine at the University of British Columbia in Vancouver and an author of the JAMA study. He agreed that Dr. Liu’s research confirmed their findings about gastroparesis and biliary disease.

However, “I interpret the results with intestinal obstruction and pancreatitis as more inconclusive than no risk,” he added.

Session co-moderator and gastroenterologist and motility specialist with Stanford Health Care in California, Linda Anh Bui Nguyen, MD, AGAF, said that she thinks “it’s a promising study.

“But with any retrospective study where you’re looking at ICD-10 [International Classification of Diseases, Tenth Revision] codes, it really depends on the coders. The code could be subjective and could be wrong,” said Dr. Nguyen, clinical professor of medicine at Stanford Medical School, California.

For example, the diagnosis of gastroparesis requires a normal endoscopy and a gastric emptying test. “But we find that, frequently, patients are being given a diagnosis of gastroparesis without the test,” she said.

An unanswered question also remains regarding how pancreatitis or biliary disease is being diagnosed: “Was it imaging, lab testing, or symptoms?” she said in an interview. “For example, if patients had pain on the right side, did they call it biliary?”

Dr. Nguyen added that it is difficult to get this kind of detail in retrospective studies. She also agreed with Dr. Liu that prospective studies are warranted.

The study was independently supported. Dr. Liu, Dr. Etminan, and Dr. Nguyen had no relevant financial disclosures.

A version of this article appeared on Medscape.com.

WASHINGTON — In contrast with a previous study that found glucagon-like peptide 1 (GLP-1) receptor agonists associated with an increased risk for acute pancreatitis and bowel obstruction, a new retrospective study found no significant link to these complications. The new data did, however, reinforce an association between GLP-1s and gastroparesis and biliary disease, specifically gallstones.

One of the big differences from the previous study, published in JAMA in October 2023 by Sodhi and colleagues , is that the current research was able to account for initial body mass index (BMI), said Benjamin Liu, MD, a resident in internal medicine at Case Western Reserve University School of Medicine, Cleveland, Ohio.

This is important, he explained in his presentation (abstract 1074) at the annual Digestive Disease Week^® 2024, because obesity on its own is associated with an increased risk for some of these gastrointestinal (GI) outcomes.

“They did an excellent study,” Dr. Liu said. “But their platform did not allow them to match participants for BMI.”

Another distinction between the two studies is that the JAMA study excluded people who had diabetes 90 days before or 30 days following the start of GLP-1 therapy.

Instead, Dr. Liu said, he and colleague Gengqing Song, MD, “just made it simple” and excluded anyone with diabetes or an A1c ≥ 6.5.

We didn’t want participants with diabetes because “we were looking at GLP-1s for weight loss,” Dr. Liu explained.

Although some clinical trials have already assessed adverse events of these medications, “clinical trials are not always a perfect representation of the real world,” Dr. Liu said in an interview. “So, it’s important to do real-world studies to see just what actually goes on.”
 

Reassessing GI Complications 

In the current study, the researchers identified 105,793 patients from the TriNetX healthcare database taking a GLP-1, either semaglutide or liraglutide, for weight loss and 8794 patients taking 8 mg naltrexone/90 mg bupropion. After propensity matching, including for BMI, there were 8792 patients in each group.

They were identified in the database between 2011 and 2023. Researchers noted their first-ever occurrence of acute pancreatitis, bowel obstruction, gastroparesis, or biliary disease during the study period.

Participants had a BMI ≥ 30 kg/m². In addition to BMI, propensity score matching included demographics, alcohol use, smoking, hyperlipidemia, and abdominal surgery. A second analysis specifically did not match participants for BMI.

The researchers found no significant association between GLP-1s and acute pancreatitis (adjusted hazard ratio [HR], 1.19; 95% CI, 0.66-2.14).

The labeling for semaglutide and liraglutide warns about an increased risk for acute pancreatitis, “but real-world studies and clinical trials are increasingly suggesting there is no increased risk,” Dr. Liu said.

They also did not find a significant association between GLP-1s and bowel obstruction (HR, 1.30; 95% CI, 0.69-2.18).

Despite the current findings, more research — especially prospective data — is needed to confirm pancreatitis as well as other GI risks like bowel obstruction potentially associated with GLP-1s, he added.

The study did, however, find an elevated risk for biliary disease (HR, 1.27; 95% CI, 1.02-1.59) in the BMI-matched cohorts.

This could be due to the rapidity of weight loss, Dr. Liu suggested. “We found that semaglutide caused more weight loss at 6 and 12 months than naltrexone/bupropion, and it did so at a faster rate. That falls in line with other data that suggest if you lose weight too fast, you actually have an increased risk of gallstones,” he said.

Rapid weight loss can release cholesterol into the body, which then collects in the bile ducts and causes gallstones. This risk for gallstone formation with rapid weight loss is also seen after bariatric surgery, Dr. Liu said.

Without BMI matching, he noted, the increased risk for biliary disease was no longer significant (HR, 1.21; 95% CI, 0.96-1.52).

The researchers also reported a significant association between GLP-1s and gastroparesis (HR, 2.30; 95% CI, 1.19-4.46), confirming the results of the JAMA study “but at a much lower incidence rate once we excluded all patients with diabetes,” said Dr. Liu. The JAMA study had a HR of 3.67 for gastroparesis (95% CI, 1.15-11.90).
 

Weighing in on the Results

“Overall, their study design looks sound,” said Mahyar Etminan, PharmD, associate professor of medicine at the University of British Columbia in Vancouver and an author of the JAMA study. He agreed that Dr. Liu’s research confirmed their findings about gastroparesis and biliary disease.

However, “I interpret the results with intestinal obstruction and pancreatitis as more inconclusive than no risk,” he added.

Session co-moderator and gastroenterologist and motility specialist with Stanford Health Care in California, Linda Anh Bui Nguyen, MD, AGAF, said that she thinks “it’s a promising study.

“But with any retrospective study where you’re looking at ICD-10 [International Classification of Diseases, Tenth Revision] codes, it really depends on the coders. The code could be subjective and could be wrong,” said Dr. Nguyen, clinical professor of medicine at Stanford Medical School, California.

For example, the diagnosis of gastroparesis requires a normal endoscopy and a gastric emptying test. “But we find that, frequently, patients are being given a diagnosis of gastroparesis without the test,” she said.

An unanswered question also remains regarding how pancreatitis or biliary disease is being diagnosed: “Was it imaging, lab testing, or symptoms?” she said in an interview. “For example, if patients had pain on the right side, did they call it biliary?”

Dr. Nguyen added that it is difficult to get this kind of detail in retrospective studies. She also agreed with Dr. Liu that prospective studies are warranted.

The study was independently supported. Dr. Liu, Dr. Etminan, and Dr. Nguyen had no relevant financial disclosures.

A version of this article appeared on Medscape.com.

SAN FRANCISCO — An estimated two out of five adult women in the United States have obesity, and given the potential challenges of losing pregnancy weight postpartum or staving off the weight gain associated with menopause, women are likely to be receptive toward weight management help from their ob.gyns. A whole new armamentarium of anti-obesity medications has become available in the past decade, providing physicians and patients with more treatment options.

Ob.gyns. are therefore well-poised to offer counseling and treatment for obesity management for their patients, Johanna G. Finkle, MD, clinical assistant professor of obstetrics and gynecology and a weight management specialist at the University of Kansas Heath System, told attendees at the annual clinical and scientific meeting of the American College of Obstetricians and Gynecologists. Dr. Finkle provided an extensive overview of what ob.gyns. need to know if they are interested in prescribing anti-obesity medications or simply providing their patients with information about the available drugs.

Kitila S. Heyward, MD, an ob.gyn. at Atrium Health in Monroe, North Carolina, who attended the talk, tries to prescribe anti-obesity medications but has run into roadblocks that Dr. Finkle’s talk helped her understand how to overcome.

“I thought it was very helpful because [I] and one of my midwives, in practice, have been trying to get things prescribed, and we can’t figure out the loopholes,” Dr. Heyward said. “Also, the failure rates are really helpful to us so that we know how to counsel people.”

Even for clinicians who aren’t prescribing these medications, Dr. Heyward said the talk was illuminating. “It offered a better understanding of the medications that your patients are on and how it can affect things like birth control, management of surgery, pregnancy, and things along those lines from a clinical day-by-day standpoint,” she said.
 

Starting With the Basics

Dr. Finkle began by emphasizing the importance of using patient-first language in discussing obesity, which means using terms such as “weight, excess weight, overweight, body mass index,” and “affected by obesity” instead of “obese, morbidly obese, heaviness, or large.” She also cited the Obesity Medicine Association’s definition of obesity: “a chronic, relapsing and treatable multifactorial, neurobehavioral disease, wherein an increase in body fat promotes adipose tissue dysfunction and abnormal fat mass physical forces, resulting in adverse metabolic, biomechanical, and psychosocial health consequences.”

Though Dr. Finkle acknowledged the limitations of relying on BMI for defining obesity, it remains the standard tool in current practice, with a BMI of 25-29.9 defining overweight and a BMI of 30 or greater defining obesity. Other diagnostic criteria for obesity in women, however, include a percentage body fat over 32% or a waist circumference of more than 35 inches.

“Women are at risk for weight gain through their entire lifespan” Dr. Finkle said, and in women with polycystic ovarian syndrome, 60%-80% have pre-obesity or obesity. In menopause, the triple threat of decreased estrogen, decreased activity, and changes in diet all contribute to obesity risk and no evidence suggests that hormone therapy can prevent weight gain.

Healthy nutrition, physical activity, and behavioral modification remain key pillars of weight management, but interventions such as surgery or medications are also important tools, she said.

“One size does not fit all in terms of treatment,” Dr. Finkle said. ”When I talk to a patient, I think about other medical complications that I can treat with these medications.”

Women for whom anti-obesity medications may be indicated are those with a BMI of 30 or greater, and those with a BMI of at least 27 along with at least one obesity-related comorbidity, such as hypertension, high cholesterol, diabetes, or sleep apnea. The goal of treating obesity with medication is at least a 5%-10% reduction of body weight.
 

Three Pharmacotherapy Categories

Dr. Finkle reviewed three basic categories of anti-obesity medications: Food and Drug Administration–approved short-term and long-term medications and then off-label drugs that can also aid in healthy weight loss. Short-term options include phentermine, diethylpropion, phendimetrazine, and benzphetamine. Long-term options include orlistat, phentermine/topiramate ER, naltrexone HCl/bupropion HCl ER, and the three GLP-1 receptor agonist drugs, liraglutide, semaglutide, and tirzepatide.

The short-term medications are stimulants that increase satiety, but adverse effects can include tachycardia, hypertension, insomnia, dry mouth, constipation, and diarrhea.

These medications are contraindicated for anyone with uncontrolled hypertension, hyperthyroidism, cardiovascular disease, MAOI use, glaucoma, or history of substance use. The goal is a 5% weight loss in 3 months, and 3 months is the maximum prescribing term.

Then Dr. Finkle reviewed the side effects and contraindications for the oral long-term medications. Orlistat, which can aid in up to 5% weight loss, can result in oily stools and fecal incontinence and is contraindicated for people with chronic malabsorption or cholestasis.

Phentermine/topiramate ER, which can aid in up to 10% weight loss, can result in hypertension, paresthesia, or constipation, and is contraindicated for those with glaucoma, hyperthyroidism, and kidney stones. After the starting dose of 3.75 mg/23 mg, Dr. Finkle increases patients’ dose every 2 weeks, ”but if they’re not tolerating it, if they’re having significant side effects, or they’re losing weight, you do not increase the medication.”

Side effects of naltrexone HCl/bupropion HCl ER, which can lead to 5%-6% weight loss, can include hypertension, suicidal ideation, and glaucoma, and it’s contraindicated in those taking opioids or with a history of seizures or anorexia.
 

The GLP-1 Receptor Agonists

Next Dr. Finkle discussed the newest but most effective medications, the GLP-1 agonists liraglutide, semaglutide, and tirzepatide. The main contraindications for these drugs are a personal or family history of medullary thyroid cancer, multiple endocrine neoplasia type II syndrome, or any hypersensitivity to this drug class. The two main serious risks are pancreatitis — a 1% risk — and gallstones. Though Dr. Finkle included suicidal ideation as a potential risk of these drugs, the most recent evidence suggests there is no link between suicidal ideation and GLP-1 agonists. The most common side effects are nausea, vomiting, diarrhea, constipation, dyspepsia, and an increased heart rate, though these eventually resolve.

“We always start low with these medications,” Dr. Finkle said, and then titrate the dose up each week, “but if they are having awful side effects, just stay on that dose longer.”

The mechanisms of all three drugs for treating obesity are similar; they work to curb central satiety and slow gastric emptying, though they also have additional mechanisms with benefits for blood glucose levels and for the liver and heart.

• Liraglutide, the first of these drugs approved, is a daily subcutaneous injection that starts at a dose of 0.6 mg and goes up to 3 mg. Patients should lose 4% of weight in 16 weeks or else they are non-responders, Dr. Finkle said.
• Semaglutide, a GLP-1 agonist given as a weekly subcutaneous injection, starts at a dose of 0.25 mg and goes up to 2.4 mg; patients should expect a 5% weight loss in 16 weeks if they are responders. Long term, however, patients lose up to an average 15% of body weight with semaglutide; a third of patients lost more than 20% of body weight in clinical trials, compared with 7%-8% body weight loss with liraglutide. An additional benefit of semaglutide is a 20% reduction in risk of cardiovascular disease.
• Tirzepatide is a combined GLP-1 and GIP agonist, also delivered as a weekly subcutaneous injection, that should result in an estimated 5% weight loss in 16 weeks for responders. But tirzepatide is the most effective of the three, with 91% of patients losing at least 5% body weight and more than half of patients (56%) losing at least 20%.

The big drawbacks to the GLP-1 agonists, however, are their high cost, common lack of insurance coverage, and continued shortages. Dr. Finkle recommended using manufacturer coupons, comparison shopping on Good Rx, and appealing prior authorization requirements to help patients pay for the GLP-1 agonists.

“Drug availability is my second problem. There’s not enough drug,” she said, and her patients often have to call around to different pharmacies to find out which ones are carrying the drug and at what doses. She will sometimes switch their doses as needed based on availability.

It’s also important for physicians to be aware of guidance from the American Society of Anesthesiologists regarding GLP-1 agonist use prior to surgery because of their slowed gastric-emptying mechanism. To reduce the risk of aspiration, patients undergoing general anesthesia should not take liraglutide on the day of surgery, and semaglutide and tirzepatide should be held for 1 week prior to the procedure. New research in JAMA Surgery, however, suggests holding these medications for longer than a week may be wiser.
 

Getting Patients Started

All the short-term and long-term medications are contraindicated during pregnancy and breastfeeding, Dr. Finkle said. Animal studies with GLP-1 agonists suggest adverse fetal effects when used during pregnancy, but the limited data in human studies so far have not shown a risk of major malformations. Dr. Finkle said the recommendations for now are to stop all GLP-1 receptor agonist drugs 2 months before patients attempt to become pregnant and not to begin them again until after they are no longer breastfeeding.

Finally, Dr. Finkle reviewed off-label medications that can result in modest weight loss, including topiramate, phentermine (not to be used for longer than 12 weeks), bupropion, naltrexone, and metformin. Metformin is likely to result in only 2% weight loss, but it may enhance the effects of GLP-1s, she said.

For ob.gyns. who want to get their patients started on one of these medications, Dr. Finkle first recommends asking patients if it’s okay to discuss their weight. ”Studies show that if you just ask permission to discuss someone’s weight, they go on to lose weight and lose more than someone who has never been asked,” Dr. Finkle said. Then she takes a history.

”When I see a patient, I ask, ‘Tell me why you’re here today,’ ” Dr. Finkle said.

This gives me a lot of insight as to why they’re coming in and it helps me understand where they’re at in terms of other things, such as depression or anxiety with weight, and it helps me to tailor my treatment.”

A full medical history is important for learning about potential contraindications or picking medications that might help with other conditions, such as topiramate for migraines. Finally, Dr. Finkle advises a lab screening with a comprehensive metabolic panel, lipid panel, HbA1c, and vitamin D.

“The [comprehensive metabolic panel] allows me to know about creatinine and liver function,” she said. If these are elevated, she will still prescribe GLP-1s but will monitor the values more closely. “Then I discuss options with the patient. They may be eligible for bariatric surgery or medications. We talk about lifestyle behavioral management, and then I go through the medications and we set goals.”

Goals include nutrition and exercise; start modest and have them work their way up by doing activities they enjoy. In addition, patients taking GLP-1s need to eat enough protein — 80 to 100 grams a day, though she starts them at 60 grams — and do regular muscle strengthening since they can lose muscle mass.

Indications for referral to an obesity medicine specialist are a history of gastric bypass/sleeve surgery, having type 2 diabetes, having an eating disorder, or having failed one of these anti-obesity medications.

Finally, Dr. Finkle reviewed medications that can cause weight gain: medroxyprogesterone acetate for birth control; beta blockers for hypertension or migraine; the antidepressants amitriptyline, paroxetine, venlafaxine, and trazodone; the mood stabilizers gabapentin, lithium, valproate, and carbamazepine; and diphenhydramine and zolpidem for sleep.

No external funding was used for the talk. Dr. Finkle and Dr. Heyward had no disclosures.

SAN FRANCISCO — An estimated two out of five adult women in the United States have obesity, and given the potential challenges of losing pregnancy weight postpartum or staving off the weight gain associated with menopause, women are likely to be receptive toward weight management help from their ob.gyns. A whole new armamentarium of anti-obesity medications has become available in the past decade, providing physicians and patients with more treatment options.

Ob.gyns. are therefore well-poised to offer counseling and treatment for obesity management for their patients, Johanna G. Finkle, MD, clinical assistant professor of obstetrics and gynecology and a weight management specialist at the University of Kansas Heath System, told attendees at the annual clinical and scientific meeting of the American College of Obstetricians and Gynecologists. Dr. Finkle provided an extensive overview of what ob.gyns. need to know if they are interested in prescribing anti-obesity medications or simply providing their patients with information about the available drugs.

Kitila S. Heyward, MD, an ob.gyn. at Atrium Health in Monroe, North Carolina, who attended the talk, tries to prescribe anti-obesity medications but has run into roadblocks that Dr. Finkle’s talk helped her understand how to overcome.

“I thought it was very helpful because [I] and one of my midwives, in practice, have been trying to get things prescribed, and we can’t figure out the loopholes,” Dr. Heyward said. “Also, the failure rates are really helpful to us so that we know how to counsel people.”

Even for clinicians who aren’t prescribing these medications, Dr. Heyward said the talk was illuminating. “It offered a better understanding of the medications that your patients are on and how it can affect things like birth control, management of surgery, pregnancy, and things along those lines from a clinical day-by-day standpoint,” she said.
 

Starting With the Basics

Dr. Finkle began by emphasizing the importance of using patient-first language in discussing obesity, which means using terms such as “weight, excess weight, overweight, body mass index,” and “affected by obesity” instead of “obese, morbidly obese, heaviness, or large.” She also cited the Obesity Medicine Association’s definition of obesity: “a chronic, relapsing and treatable multifactorial, neurobehavioral disease, wherein an increase in body fat promotes adipose tissue dysfunction and abnormal fat mass physical forces, resulting in adverse metabolic, biomechanical, and psychosocial health consequences.”

Though Dr. Finkle acknowledged the limitations of relying on BMI for defining obesity, it remains the standard tool in current practice, with a BMI of 25-29.9 defining overweight and a BMI of 30 or greater defining obesity. Other diagnostic criteria for obesity in women, however, include a percentage body fat over 32% or a waist circumference of more than 35 inches.

“Women are at risk for weight gain through their entire lifespan” Dr. Finkle said, and in women with polycystic ovarian syndrome, 60%-80% have pre-obesity or obesity. In menopause, the triple threat of decreased estrogen, decreased activity, and changes in diet all contribute to obesity risk and no evidence suggests that hormone therapy can prevent weight gain.

Healthy nutrition, physical activity, and behavioral modification remain key pillars of weight management, but interventions such as surgery or medications are also important tools, she said.

“One size does not fit all in terms of treatment,” Dr. Finkle said. ”When I talk to a patient, I think about other medical complications that I can treat with these medications.”

Women for whom anti-obesity medications may be indicated are those with a BMI of 30 or greater, and those with a BMI of at least 27 along with at least one obesity-related comorbidity, such as hypertension, high cholesterol, diabetes, or sleep apnea. The goal of treating obesity with medication is at least a 5%-10% reduction of body weight.
 

Three Pharmacotherapy Categories

Dr. Finkle reviewed three basic categories of anti-obesity medications: Food and Drug Administration–approved short-term and long-term medications and then off-label drugs that can also aid in healthy weight loss. Short-term options include phentermine, diethylpropion, phendimetrazine, and benzphetamine. Long-term options include orlistat, phentermine/topiramate ER, naltrexone HCl/bupropion HCl ER, and the three GLP-1 receptor agonist drugs, liraglutide, semaglutide, and tirzepatide.

The short-term medications are stimulants that increase satiety, but adverse effects can include tachycardia, hypertension, insomnia, dry mouth, constipation, and diarrhea.

These medications are contraindicated for anyone with uncontrolled hypertension, hyperthyroidism, cardiovascular disease, MAOI use, glaucoma, or history of substance use. The goal is a 5% weight loss in 3 months, and 3 months is the maximum prescribing term.

Then Dr. Finkle reviewed the side effects and contraindications for the oral long-term medications. Orlistat, which can aid in up to 5% weight loss, can result in oily stools and fecal incontinence and is contraindicated for people with chronic malabsorption or cholestasis.

Phentermine/topiramate ER, which can aid in up to 10% weight loss, can result in hypertension, paresthesia, or constipation, and is contraindicated for those with glaucoma, hyperthyroidism, and kidney stones. After the starting dose of 3.75 mg/23 mg, Dr. Finkle increases patients’ dose every 2 weeks, ”but if they’re not tolerating it, if they’re having significant side effects, or they’re losing weight, you do not increase the medication.”

Side effects of naltrexone HCl/bupropion HCl ER, which can lead to 5%-6% weight loss, can include hypertension, suicidal ideation, and glaucoma, and it’s contraindicated in those taking opioids or with a history of seizures or anorexia.
 

The GLP-1 Receptor Agonists

Next Dr. Finkle discussed the newest but most effective medications, the GLP-1 agonists liraglutide, semaglutide, and tirzepatide. The main contraindications for these drugs are a personal or family history of medullary thyroid cancer, multiple endocrine neoplasia type II syndrome, or any hypersensitivity to this drug class. The two main serious risks are pancreatitis — a 1% risk — and gallstones. Though Dr. Finkle included suicidal ideation as a potential risk of these drugs, the most recent evidence suggests there is no link between suicidal ideation and GLP-1 agonists. The most common side effects are nausea, vomiting, diarrhea, constipation, dyspepsia, and an increased heart rate, though these eventually resolve.

“We always start low with these medications,” Dr. Finkle said, and then titrate the dose up each week, “but if they are having awful side effects, just stay on that dose longer.”

The mechanisms of all three drugs for treating obesity are similar; they work to curb central satiety and slow gastric emptying, though they also have additional mechanisms with benefits for blood glucose levels and for the liver and heart.

• Liraglutide, the first of these drugs approved, is a daily subcutaneous injection that starts at a dose of 0.6 mg and goes up to 3 mg. Patients should lose 4% of weight in 16 weeks or else they are non-responders, Dr. Finkle said.
• Semaglutide, a GLP-1 agonist given as a weekly subcutaneous injection, starts at a dose of 0.25 mg and goes up to 2.4 mg; patients should expect a 5% weight loss in 16 weeks if they are responders. Long term, however, patients lose up to an average 15% of body weight with semaglutide; a third of patients lost more than 20% of body weight in clinical trials, compared with 7%-8% body weight loss with liraglutide. An additional benefit of semaglutide is a 20% reduction in risk of cardiovascular disease.
• Tirzepatide is a combined GLP-1 and GIP agonist, also delivered as a weekly subcutaneous injection, that should result in an estimated 5% weight loss in 16 weeks for responders. But tirzepatide is the most effective of the three, with 91% of patients losing at least 5% body weight and more than half of patients (56%) losing at least 20%.

The big drawbacks to the GLP-1 agonists, however, are their high cost, common lack of insurance coverage, and continued shortages. Dr. Finkle recommended using manufacturer coupons, comparison shopping on Good Rx, and appealing prior authorization requirements to help patients pay for the GLP-1 agonists.

“Drug availability is my second problem. There’s not enough drug,” she said, and her patients often have to call around to different pharmacies to find out which ones are carrying the drug and at what doses. She will sometimes switch their doses as needed based on availability.

It’s also important for physicians to be aware of guidance from the American Society of Anesthesiologists regarding GLP-1 agonist use prior to surgery because of their slowed gastric-emptying mechanism. To reduce the risk of aspiration, patients undergoing general anesthesia should not take liraglutide on the day of surgery, and semaglutide and tirzepatide should be held for 1 week prior to the procedure. New research in JAMA Surgery, however, suggests holding these medications for longer than a week may be wiser.
 

Getting Patients Started

All the short-term and long-term medications are contraindicated during pregnancy and breastfeeding, Dr. Finkle said. Animal studies with GLP-1 agonists suggest adverse fetal effects when used during pregnancy, but the limited data in human studies so far have not shown a risk of major malformations. Dr. Finkle said the recommendations for now are to stop all GLP-1 receptor agonist drugs 2 months before patients attempt to become pregnant and not to begin them again until after they are no longer breastfeeding.

Finally, Dr. Finkle reviewed off-label medications that can result in modest weight loss, including topiramate, phentermine (not to be used for longer than 12 weeks), bupropion, naltrexone, and metformin. Metformin is likely to result in only 2% weight loss, but it may enhance the effects of GLP-1s, she said.

For ob.gyns. who want to get their patients started on one of these medications, Dr. Finkle first recommends asking patients if it’s okay to discuss their weight. ”Studies show that if you just ask permission to discuss someone’s weight, they go on to lose weight and lose more than someone who has never been asked,” Dr. Finkle said. Then she takes a history.

”When I see a patient, I ask, ‘Tell me why you’re here today,’ ” Dr. Finkle said.

This gives me a lot of insight as to why they’re coming in and it helps me understand where they’re at in terms of other things, such as depression or anxiety with weight, and it helps me to tailor my treatment.”

A full medical history is important for learning about potential contraindications or picking medications that might help with other conditions, such as topiramate for migraines. Finally, Dr. Finkle advises a lab screening with a comprehensive metabolic panel, lipid panel, HbA1c, and vitamin D.

“The [comprehensive metabolic panel] allows me to know about creatinine and liver function,” she said. If these are elevated, she will still prescribe GLP-1s but will monitor the values more closely. “Then I discuss options with the patient. They may be eligible for bariatric surgery or medications. We talk about lifestyle behavioral management, and then I go through the medications and we set goals.”

Goals include nutrition and exercise; start modest and have them work their way up by doing activities they enjoy. In addition, patients taking GLP-1s need to eat enough protein — 80 to 100 grams a day, though she starts them at 60 grams — and do regular muscle strengthening since they can lose muscle mass.

Indications for referral to an obesity medicine specialist are a history of gastric bypass/sleeve surgery, having type 2 diabetes, having an eating disorder, or having failed one of these anti-obesity medications.

Finally, Dr. Finkle reviewed medications that can cause weight gain: medroxyprogesterone acetate for birth control; beta blockers for hypertension or migraine; the antidepressants amitriptyline, paroxetine, venlafaxine, and trazodone; the mood stabilizers gabapentin, lithium, valproate, and carbamazepine; and diphenhydramine and zolpidem for sleep.

No external funding was used for the talk. Dr. Finkle and Dr. Heyward had no disclosures.

SAN FRANCISCO — An estimated two out of five adult women in the United States have obesity, and given the potential challenges of losing pregnancy weight postpartum or staving off the weight gain associated with menopause, women are likely to be receptive toward weight management help from their ob.gyns. A whole new armamentarium of anti-obesity medications has become available in the past decade, providing physicians and patients with more treatment options.

Ob.gyns. are therefore well-poised to offer counseling and treatment for obesity management for their patients, Johanna G. Finkle, MD, clinical assistant professor of obstetrics and gynecology and a weight management specialist at the University of Kansas Heath System, told attendees at the annual clinical and scientific meeting of the American College of Obstetricians and Gynecologists. Dr. Finkle provided an extensive overview of what ob.gyns. need to know if they are interested in prescribing anti-obesity medications or simply providing their patients with information about the available drugs.

Kitila S. Heyward, MD, an ob.gyn. at Atrium Health in Monroe, North Carolina, who attended the talk, tries to prescribe anti-obesity medications but has run into roadblocks that Dr. Finkle’s talk helped her understand how to overcome.

“I thought it was very helpful because [I] and one of my midwives, in practice, have been trying to get things prescribed, and we can’t figure out the loopholes,” Dr. Heyward said. “Also, the failure rates are really helpful to us so that we know how to counsel people.”

Even for clinicians who aren’t prescribing these medications, Dr. Heyward said the talk was illuminating. “It offered a better understanding of the medications that your patients are on and how it can affect things like birth control, management of surgery, pregnancy, and things along those lines from a clinical day-by-day standpoint,” she said.
 

Starting With the Basics

Dr. Finkle began by emphasizing the importance of using patient-first language in discussing obesity, which means using terms such as “weight, excess weight, overweight, body mass index,” and “affected by obesity” instead of “obese, morbidly obese, heaviness, or large.” She also cited the Obesity Medicine Association’s definition of obesity: “a chronic, relapsing and treatable multifactorial, neurobehavioral disease, wherein an increase in body fat promotes adipose tissue dysfunction and abnormal fat mass physical forces, resulting in adverse metabolic, biomechanical, and psychosocial health consequences.”

Though Dr. Finkle acknowledged the limitations of relying on BMI for defining obesity, it remains the standard tool in current practice, with a BMI of 25-29.9 defining overweight and a BMI of 30 or greater defining obesity. Other diagnostic criteria for obesity in women, however, include a percentage body fat over 32% or a waist circumference of more than 35 inches.

“Women are at risk for weight gain through their entire lifespan” Dr. Finkle said, and in women with polycystic ovarian syndrome, 60%-80% have pre-obesity or obesity. In menopause, the triple threat of decreased estrogen, decreased activity, and changes in diet all contribute to obesity risk and no evidence suggests that hormone therapy can prevent weight gain.

Healthy nutrition, physical activity, and behavioral modification remain key pillars of weight management, but interventions such as surgery or medications are also important tools, she said.

“One size does not fit all in terms of treatment,” Dr. Finkle said. ”When I talk to a patient, I think about other medical complications that I can treat with these medications.”

Women for whom anti-obesity medications may be indicated are those with a BMI of 30 or greater, and those with a BMI of at least 27 along with at least one obesity-related comorbidity, such as hypertension, high cholesterol, diabetes, or sleep apnea. The goal of treating obesity with medication is at least a 5%-10% reduction of body weight.
 

Three Pharmacotherapy Categories

Dr. Finkle reviewed three basic categories of anti-obesity medications: Food and Drug Administration–approved short-term and long-term medications and then off-label drugs that can also aid in healthy weight loss. Short-term options include phentermine, diethylpropion, phendimetrazine, and benzphetamine. Long-term options include orlistat, phentermine/topiramate ER, naltrexone HCl/bupropion HCl ER, and the three GLP-1 receptor agonist drugs, liraglutide, semaglutide, and tirzepatide.

The short-term medications are stimulants that increase satiety, but adverse effects can include tachycardia, hypertension, insomnia, dry mouth, constipation, and diarrhea.

These medications are contraindicated for anyone with uncontrolled hypertension, hyperthyroidism, cardiovascular disease, MAOI use, glaucoma, or history of substance use. The goal is a 5% weight loss in 3 months, and 3 months is the maximum prescribing term.

Then Dr. Finkle reviewed the side effects and contraindications for the oral long-term medications. Orlistat, which can aid in up to 5% weight loss, can result in oily stools and fecal incontinence and is contraindicated for people with chronic malabsorption or cholestasis.

Phentermine/topiramate ER, which can aid in up to 10% weight loss, can result in hypertension, paresthesia, or constipation, and is contraindicated for those with glaucoma, hyperthyroidism, and kidney stones. After the starting dose of 3.75 mg/23 mg, Dr. Finkle increases patients’ dose every 2 weeks, ”but if they’re not tolerating it, if they’re having significant side effects, or they’re losing weight, you do not increase the medication.”

Side effects of naltrexone HCl/bupropion HCl ER, which can lead to 5%-6% weight loss, can include hypertension, suicidal ideation, and glaucoma, and it’s contraindicated in those taking opioids or with a history of seizures or anorexia.
 

The GLP-1 Receptor Agonists

Next Dr. Finkle discussed the newest but most effective medications, the GLP-1 agonists liraglutide, semaglutide, and tirzepatide. The main contraindications for these drugs are a personal or family history of medullary thyroid cancer, multiple endocrine neoplasia type II syndrome, or any hypersensitivity to this drug class. The two main serious risks are pancreatitis — a 1% risk — and gallstones. Though Dr. Finkle included suicidal ideation as a potential risk of these drugs, the most recent evidence suggests there is no link between suicidal ideation and GLP-1 agonists. The most common side effects are nausea, vomiting, diarrhea, constipation, dyspepsia, and an increased heart rate, though these eventually resolve.

“We always start low with these medications,” Dr. Finkle said, and then titrate the dose up each week, “but if they are having awful side effects, just stay on that dose longer.”

The mechanisms of all three drugs for treating obesity are similar; they work to curb central satiety and slow gastric emptying, though they also have additional mechanisms with benefits for blood glucose levels and for the liver and heart.

• Liraglutide, the first of these drugs approved, is a daily subcutaneous injection that starts at a dose of 0.6 mg and goes up to 3 mg. Patients should lose 4% of weight in 16 weeks or else they are non-responders, Dr. Finkle said.
• Semaglutide, a GLP-1 agonist given as a weekly subcutaneous injection, starts at a dose of 0.25 mg and goes up to 2.4 mg; patients should expect a 5% weight loss in 16 weeks if they are responders. Long term, however, patients lose up to an average 15% of body weight with semaglutide; a third of patients lost more than 20% of body weight in clinical trials, compared with 7%-8% body weight loss with liraglutide. An additional benefit of semaglutide is a 20% reduction in risk of cardiovascular disease.
• Tirzepatide is a combined GLP-1 and GIP agonist, also delivered as a weekly subcutaneous injection, that should result in an estimated 5% weight loss in 16 weeks for responders. But tirzepatide is the most effective of the three, with 91% of patients losing at least 5% body weight and more than half of patients (56%) losing at least 20%.

The big drawbacks to the GLP-1 agonists, however, are their high cost, common lack of insurance coverage, and continued shortages. Dr. Finkle recommended using manufacturer coupons, comparison shopping on Good Rx, and appealing prior authorization requirements to help patients pay for the GLP-1 agonists.

“Drug availability is my second problem. There’s not enough drug,” she said, and her patients often have to call around to different pharmacies to find out which ones are carrying the drug and at what doses. She will sometimes switch their doses as needed based on availability.

It’s also important for physicians to be aware of guidance from the American Society of Anesthesiologists regarding GLP-1 agonist use prior to surgery because of their slowed gastric-emptying mechanism. To reduce the risk of aspiration, patients undergoing general anesthesia should not take liraglutide on the day of surgery, and semaglutide and tirzepatide should be held for 1 week prior to the procedure. New research in JAMA Surgery, however, suggests holding these medications for longer than a week may be wiser.
 

Getting Patients Started

All the short-term and long-term medications are contraindicated during pregnancy and breastfeeding, Dr. Finkle said. Animal studies with GLP-1 agonists suggest adverse fetal effects when used during pregnancy, but the limited data in human studies so far have not shown a risk of major malformations. Dr. Finkle said the recommendations for now are to stop all GLP-1 receptor agonist drugs 2 months before patients attempt to become pregnant and not to begin them again until after they are no longer breastfeeding.

Finally, Dr. Finkle reviewed off-label medications that can result in modest weight loss, including topiramate, phentermine (not to be used for longer than 12 weeks), bupropion, naltrexone, and metformin. Metformin is likely to result in only 2% weight loss, but it may enhance the effects of GLP-1s, she said.

For ob.gyns. who want to get their patients started on one of these medications, Dr. Finkle first recommends asking patients if it’s okay to discuss their weight. ”Studies show that if you just ask permission to discuss someone’s weight, they go on to lose weight and lose more than someone who has never been asked,” Dr. Finkle said. Then she takes a history.

”When I see a patient, I ask, ‘Tell me why you’re here today,’ ” Dr. Finkle said.

This gives me a lot of insight as to why they’re coming in and it helps me understand where they’re at in terms of other things, such as depression or anxiety with weight, and it helps me to tailor my treatment.”

A full medical history is important for learning about potential contraindications or picking medications that might help with other conditions, such as topiramate for migraines. Finally, Dr. Finkle advises a lab screening with a comprehensive metabolic panel, lipid panel, HbA1c, and vitamin D.

“The [comprehensive metabolic panel] allows me to know about creatinine and liver function,” she said. If these are elevated, she will still prescribe GLP-1s but will monitor the values more closely. “Then I discuss options with the patient. They may be eligible for bariatric surgery or medications. We talk about lifestyle behavioral management, and then I go through the medications and we set goals.”

Goals include nutrition and exercise; start modest and have them work their way up by doing activities they enjoy. In addition, patients taking GLP-1s need to eat enough protein — 80 to 100 grams a day, though she starts them at 60 grams — and do regular muscle strengthening since they can lose muscle mass.

Indications for referral to an obesity medicine specialist are a history of gastric bypass/sleeve surgery, having type 2 diabetes, having an eating disorder, or having failed one of these anti-obesity medications.

Finally, Dr. Finkle reviewed medications that can cause weight gain: medroxyprogesterone acetate for birth control; beta blockers for hypertension or migraine; the antidepressants amitriptyline, paroxetine, venlafaxine, and trazodone; the mood stabilizers gabapentin, lithium, valproate, and carbamazepine; and diphenhydramine and zolpidem for sleep.

No external funding was used for the talk. Dr. Finkle and Dr. Heyward had no disclosures.

TOPLINE:

A commercially available test for 40 genetic variants that identifies people with the “hungry gut” obesity phenotype can predict who will respond most to semaglutide for weight management, new evidence reveals.

METHODOLOGY:

• A machine learning genetic risk score can identify people with the hungry gut obesity phenotype, which has been found to be associated with greater weight loss with the glucagon-like peptide 1 receptor agonists (GLP-1 RA) liraglutide and exenatide. 
• For this study, researchers calculated the genetic risk score for 84 adults undergoing weight loss interventions at Mayo Clinic who were prescribed the GLP-1 RA semaglutide.
• Study participants were classified as the obesity phenotype hungry gut positive (n = 51) or hungry gut negative (n = 33).
• The researchers measured total body weight loss at 3, 6, 9, and 12 months and assessed the ability of the score to predict the response to semaglutide (defined as ≥ 5% of total body weight loss measured at 12 months).

TAKEAWAY:

• At 3 and 6 months, there were no significant differences in weight loss between the hungry gut positive and hungry gut negative groups.
• By 9 months, participants in the positive group lost 14.4% of their total body weight compared with 10.3% in case of participants in the negative group (P = .045).
• After a total of 12 months, the positive group lost 19.5% of their total body weight compared with 10.0% in case of participants in the negative group (P = .01).
• When used to predict the response to semaglutide, the area under the curve for the machine-learning genetic risk score was 0.76 (95% CI, 0.57-0.94; P = .04).

IN PRACTICE:

We can now tell with confidence who is going to respond to semaglutide, said Andres Acosta, MD, PhD, associate professor of medicine at Mayo Clinic. “For nonresponders, we can think about other interventions or medications that we have available.”

SOURCE:

This study was presented on May 20, 2024, at the annual Digestive Disease Week® (DDW) (Abstract 638).

LIMITATIONS:

Further prospective studies are needed to assess the validity of the test in a more diverse population and with different weight loss interventions.

DISCLOSURES:

This study was supported by a partnership between Mayo Clinic and Phenomix Sciences. Dr. Acosta is a cofounder of Phenomix Sciences.

A version of this article appeared on Medscape.com.

TOPLINE:

A commercially available test for 40 genetic variants that identifies people with the “hungry gut” obesity phenotype can predict who will respond most to semaglutide for weight management, new evidence reveals.

METHODOLOGY:

• A machine learning genetic risk score can identify people with the hungry gut obesity phenotype, which has been found to be associated with greater weight loss with the glucagon-like peptide 1 receptor agonists (GLP-1 RA) liraglutide and exenatide. 
• For this study, researchers calculated the genetic risk score for 84 adults undergoing weight loss interventions at Mayo Clinic who were prescribed the GLP-1 RA semaglutide.
• Study participants were classified as the obesity phenotype hungry gut positive (n = 51) or hungry gut negative (n = 33).
• The researchers measured total body weight loss at 3, 6, 9, and 12 months and assessed the ability of the score to predict the response to semaglutide (defined as ≥ 5% of total body weight loss measured at 12 months).

TAKEAWAY:

• At 3 and 6 months, there were no significant differences in weight loss between the hungry gut positive and hungry gut negative groups.
• By 9 months, participants in the positive group lost 14.4% of their total body weight compared with 10.3% in case of participants in the negative group (P = .045).
• After a total of 12 months, the positive group lost 19.5% of their total body weight compared with 10.0% in case of participants in the negative group (P = .01).
• When used to predict the response to semaglutide, the area under the curve for the machine-learning genetic risk score was 0.76 (95% CI, 0.57-0.94; P = .04).

IN PRACTICE:

We can now tell with confidence who is going to respond to semaglutide, said Andres Acosta, MD, PhD, associate professor of medicine at Mayo Clinic. “For nonresponders, we can think about other interventions or medications that we have available.”

SOURCE:

This study was presented on May 20, 2024, at the annual Digestive Disease Week® (DDW) (Abstract 638).

LIMITATIONS:

Further prospective studies are needed to assess the validity of the test in a more diverse population and with different weight loss interventions.

DISCLOSURES:

This study was supported by a partnership between Mayo Clinic and Phenomix Sciences. Dr. Acosta is a cofounder of Phenomix Sciences.

A version of this article appeared on Medscape.com.

TOPLINE:

A commercially available test for 40 genetic variants that identifies people with the “hungry gut” obesity phenotype can predict who will respond most to semaglutide for weight management, new evidence reveals.

METHODOLOGY:

• A machine learning genetic risk score can identify people with the hungry gut obesity phenotype, which has been found to be associated with greater weight loss with the glucagon-like peptide 1 receptor agonists (GLP-1 RA) liraglutide and exenatide. 
• For this study, researchers calculated the genetic risk score for 84 adults undergoing weight loss interventions at Mayo Clinic who were prescribed the GLP-1 RA semaglutide.
• Study participants were classified as the obesity phenotype hungry gut positive (n = 51) or hungry gut negative (n = 33).
• The researchers measured total body weight loss at 3, 6, 9, and 12 months and assessed the ability of the score to predict the response to semaglutide (defined as ≥ 5% of total body weight loss measured at 12 months).

TAKEAWAY:

• At 3 and 6 months, there were no significant differences in weight loss between the hungry gut positive and hungry gut negative groups.
• By 9 months, participants in the positive group lost 14.4% of their total body weight compared with 10.3% in case of participants in the negative group (P = .045).
• After a total of 12 months, the positive group lost 19.5% of their total body weight compared with 10.0% in case of participants in the negative group (P = .01).
• When used to predict the response to semaglutide, the area under the curve for the machine-learning genetic risk score was 0.76 (95% CI, 0.57-0.94; P = .04).

IN PRACTICE:

We can now tell with confidence who is going to respond to semaglutide, said Andres Acosta, MD, PhD, associate professor of medicine at Mayo Clinic. “For nonresponders, we can think about other interventions or medications that we have available.”

SOURCE:

This study was presented on May 20, 2024, at the annual Digestive Disease Week® (DDW) (Abstract 638).

LIMITATIONS:

Further prospective studies are needed to assess the validity of the test in a more diverse population and with different weight loss interventions.

DISCLOSURES:

This study was supported by a partnership between Mayo Clinic and Phenomix Sciences. Dr. Acosta is a cofounder of Phenomix Sciences.

A version of this article appeared on Medscape.com.

VENICE, ITALY — Obesity as defined by adiposity measures corresponds to a lower body mass index (BMI) cutoff (≥ 27) in men and women of middle age or older than does the widely used conventional obesity threshold of ≥ 30, shows a study performed in Italy.

Presenting at this year’s European Congress on Obesity (ECO), researchers from the University of Rome Tor Vergata and University of Modena and Reggio Emilia, Italy, and Beirut Arab University, Lebanon, conducted the study to compare the validity of the traditional World Health Organization (WHO) BMI threshold for obesity classification (≥ 30) vs adiposity levels as an alternative measure in middle-aged and older Italians. 

Marwan El Ghoch, PhD, a professor in the Department of Biomedical, Metabolic and Neuroscience, University of Modena and Reggio Emilia, presented the findings as a poster (GC4.152). “If you classify obesity with only BMI and without consideration of body composition, then this will not be enough. I believe BMI can be considered as a screening starting point, but we need to understand the body composition of fat and muscle too,” he said.

“We recommend this new cutoff point be applied in clinical settings when screening individuals for obesity in Italy,” El Ghoch asserted.

BMI Limitations Misses Body Composition 

If obesity is a chronic disease defined as excessive accumulation of body fat and leading to increased risk for disease, disability, and mortality, then “the identification of obesity based on body fat measurements is the most reliable method,” but he acknowledged that measuring this is not readily available in most clinical settings, and as such, “simple BMI has a place,” Dr. El Ghoch said.

“Use of BMI has its limitations, for example, it does not distinguish between body composition compartments — so between muscle and fat mass, nor does it detect changes across the lifespan of an individual [for example, the shift to more fat and less muscle with age] and it varies by ethnicity,” he pointed out. 

This led El Ghoch to ask whether using BMI as a threshold for obesity was suitable for all age groups. 

The researchers included 4800 participants of mixed gender aged 40-80 years of age. Based on the WHO’s BMI classification, 1087 people had normal body weight, 1826 had overweight, and 1887 had obesity. The participants were then categorized by adiposity status on the basis of the total body fat percentage as measured by dual-energy x-ray absorptiometry (DXA), and obesity was predicted by statistical analysis.

The analysis found that around 38% of men and 41% of women had a BMI ≥ 30 based on conventional BMI criteria, indicating obesity. However, when assessed according to body fat percentage, around 71% of the men and 64% of the women were determined to have obesity. 

Dr. El Ghoch and his colleagues calculated that a lower BMI cutoff of around 27 for obesity in people older than 40 years may be more appropriate than the existing BMI threshold of 30. 

The researchers noted some limitations of their work, including that it was a single-center, cross-sectional observational study conducted in one area of Italy. In addition, they did not account for possible confounders, such as dietary habits, and physical activity patterns, and sleep health, all of which can increase the likelihood of obesity and may interact with age-related differences. 

Missing a Significant Proportion of the Population at Risk for Obesity-Related Diseases

In an interview, Luca Busetto, MD, obesity specialist and research assistant at the Center for the Study and the Integrated Treatment of the Obesity, University of Padova, Italy, and local ECO president, commented on the study and the issue of BMI as a measure and threshold. “I think the problem we face with a classic cutoff using BMI is that we miss a significant group of people who have BMI less than 30 but have a high fat mass,” he said, adding, “but these people have the same risk of developing chronic diseases as those people with higher BMI. If they have a bad fat distribution, then their risk of complications is even higher. 

“Dr El Ghoch’s study underlines the lack of treatment for this significant part of the population,” he remarked. “We also need to use waist circumference and waist-to-height [ratio] as additional measures in this population.” 

Dr. Busetto also presented a population-based study at ECO that included over 400,000 people with a follow-up of 8 years. “We found the risk of developing obesity complications, including type 2 diabetes, hypertension, osteoarthritis, and cardiovascular disease, is not only dependent on BMI but [also] dependent on your waist-to-height ratio,” he said, highlighting that “some of these complications are only predicted by the waist-to-height ratio and not by your BMI — in particular cardiovascular diseases.

“I honestly think any screening process today needs to include both BMI and waist-to-height ratio. Having a DXA scan is great in a specialist setting, but routinely we need a measure that is valid in every office in every country and small town.”

Francesco Rubino, MD, chair of metabolic and bariatric surgery at King›s College London, United Kingdom, also remarked that understanding the changes in fat and lean mass proportions and distribution in middle years will affect health in later life, and importantly from a clinical perspective, it is a time where there is still some opportunity to intervene. 

Reflecting further on how it underscores the limitations of BMI in misclassifying people as having obesity or not, Rubino asked, “Importantly, does this make a difference to health and longevity? Really, we need an active measure of adiposity first, and then even if we do say someone has obesity — so excess adiposity — then does this translate into illness, because [excess adiposity] does not translate into disease for every individual?

“Any measure we use as a diagnostic criterion needs to reflect the ongoing disease in an individual, not only the risk of future disease — because not every person experiences this. As a doctor, we deal with the individual and how the diagnosis of disease relates to the individual in a clinic now, as well as the risk of tomorrow,” he concluded. 

Dr. El Ghoch declares no conflicts of interest. Dr. Rubino disclosed that he has received research grants from Novo Nordisk, Medtronic, and Johnson & Johnson. He has undertaken paid consultancy work for GI Dynamics and received honoraria for lectures from Medtronic, Novo Nordisk, and Johnson & Johnson. He is a member of the data safety monitoring board for GT Metabolic Solutions and has provided scientific advice to Keyron, MetaDeq, GHP Scientific, and ViBo Health for no remuneration. Dr. Busetto discloses relationships with Burno Farmaceutici, Novo Nordisk, PronoKal, Rhythm, and Therascience. 

A version of this article appeared on Medscape.com.

VENICE, ITALY — Obesity as defined by adiposity measures corresponds to a lower body mass index (BMI) cutoff (≥ 27) in men and women of middle age or older than does the widely used conventional obesity threshold of ≥ 30, shows a study performed in Italy.

Presenting at this year’s European Congress on Obesity (ECO), researchers from the University of Rome Tor Vergata and University of Modena and Reggio Emilia, Italy, and Beirut Arab University, Lebanon, conducted the study to compare the validity of the traditional World Health Organization (WHO) BMI threshold for obesity classification (≥ 30) vs adiposity levels as an alternative measure in middle-aged and older Italians. 

Marwan El Ghoch, PhD, a professor in the Department of Biomedical, Metabolic and Neuroscience, University of Modena and Reggio Emilia, presented the findings as a poster (GC4.152). “If you classify obesity with only BMI and without consideration of body composition, then this will not be enough. I believe BMI can be considered as a screening starting point, but we need to understand the body composition of fat and muscle too,” he said.

“We recommend this new cutoff point be applied in clinical settings when screening individuals for obesity in Italy,” El Ghoch asserted.

BMI Limitations Misses Body Composition 

If obesity is a chronic disease defined as excessive accumulation of body fat and leading to increased risk for disease, disability, and mortality, then “the identification of obesity based on body fat measurements is the most reliable method,” but he acknowledged that measuring this is not readily available in most clinical settings, and as such, “simple BMI has a place,” Dr. El Ghoch said.

“Use of BMI has its limitations, for example, it does not distinguish between body composition compartments — so between muscle and fat mass, nor does it detect changes across the lifespan of an individual [for example, the shift to more fat and less muscle with age] and it varies by ethnicity,” he pointed out. 

This led El Ghoch to ask whether using BMI as a threshold for obesity was suitable for all age groups. 

The researchers included 4800 participants of mixed gender aged 40-80 years of age. Based on the WHO’s BMI classification, 1087 people had normal body weight, 1826 had overweight, and 1887 had obesity. The participants were then categorized by adiposity status on the basis of the total body fat percentage as measured by dual-energy x-ray absorptiometry (DXA), and obesity was predicted by statistical analysis.

The analysis found that around 38% of men and 41% of women had a BMI ≥ 30 based on conventional BMI criteria, indicating obesity. However, when assessed according to body fat percentage, around 71% of the men and 64% of the women were determined to have obesity. 

Dr. El Ghoch and his colleagues calculated that a lower BMI cutoff of around 27 for obesity in people older than 40 years may be more appropriate than the existing BMI threshold of 30. 

The researchers noted some limitations of their work, including that it was a single-center, cross-sectional observational study conducted in one area of Italy. In addition, they did not account for possible confounders, such as dietary habits, and physical activity patterns, and sleep health, all of which can increase the likelihood of obesity and may interact with age-related differences. 

Missing a Significant Proportion of the Population at Risk for Obesity-Related Diseases

In an interview, Luca Busetto, MD, obesity specialist and research assistant at the Center for the Study and the Integrated Treatment of the Obesity, University of Padova, Italy, and local ECO president, commented on the study and the issue of BMI as a measure and threshold. “I think the problem we face with a classic cutoff using BMI is that we miss a significant group of people who have BMI less than 30 but have a high fat mass,” he said, adding, “but these people have the same risk of developing chronic diseases as those people with higher BMI. If they have a bad fat distribution, then their risk of complications is even higher. 

“Dr El Ghoch’s study underlines the lack of treatment for this significant part of the population,” he remarked. “We also need to use waist circumference and waist-to-height [ratio] as additional measures in this population.” 

Dr. Busetto also presented a population-based study at ECO that included over 400,000 people with a follow-up of 8 years. “We found the risk of developing obesity complications, including type 2 diabetes, hypertension, osteoarthritis, and cardiovascular disease, is not only dependent on BMI but [also] dependent on your waist-to-height ratio,” he said, highlighting that “some of these complications are only predicted by the waist-to-height ratio and not by your BMI — in particular cardiovascular diseases.

“I honestly think any screening process today needs to include both BMI and waist-to-height ratio. Having a DXA scan is great in a specialist setting, but routinely we need a measure that is valid in every office in every country and small town.”

Francesco Rubino, MD, chair of metabolic and bariatric surgery at King›s College London, United Kingdom, also remarked that understanding the changes in fat and lean mass proportions and distribution in middle years will affect health in later life, and importantly from a clinical perspective, it is a time where there is still some opportunity to intervene. 

Reflecting further on how it underscores the limitations of BMI in misclassifying people as having obesity or not, Rubino asked, “Importantly, does this make a difference to health and longevity? Really, we need an active measure of adiposity first, and then even if we do say someone has obesity — so excess adiposity — then does this translate into illness, because [excess adiposity] does not translate into disease for every individual?

“Any measure we use as a diagnostic criterion needs to reflect the ongoing disease in an individual, not only the risk of future disease — because not every person experiences this. As a doctor, we deal with the individual and how the diagnosis of disease relates to the individual in a clinic now, as well as the risk of tomorrow,” he concluded. 

Dr. El Ghoch declares no conflicts of interest. Dr. Rubino disclosed that he has received research grants from Novo Nordisk, Medtronic, and Johnson & Johnson. He has undertaken paid consultancy work for GI Dynamics and received honoraria for lectures from Medtronic, Novo Nordisk, and Johnson & Johnson. He is a member of the data safety monitoring board for GT Metabolic Solutions and has provided scientific advice to Keyron, MetaDeq, GHP Scientific, and ViBo Health for no remuneration. Dr. Busetto discloses relationships with Burno Farmaceutici, Novo Nordisk, PronoKal, Rhythm, and Therascience. 

A version of this article appeared on Medscape.com.

VENICE, ITALY — Obesity as defined by adiposity measures corresponds to a lower body mass index (BMI) cutoff (≥ 27) in men and women of middle age or older than does the widely used conventional obesity threshold of ≥ 30, shows a study performed in Italy.

Presenting at this year’s European Congress on Obesity (ECO), researchers from the University of Rome Tor Vergata and University of Modena and Reggio Emilia, Italy, and Beirut Arab University, Lebanon, conducted the study to compare the validity of the traditional World Health Organization (WHO) BMI threshold for obesity classification (≥ 30) vs adiposity levels as an alternative measure in middle-aged and older Italians. 

Marwan El Ghoch, PhD, a professor in the Department of Biomedical, Metabolic and Neuroscience, University of Modena and Reggio Emilia, presented the findings as a poster (GC4.152). “If you classify obesity with only BMI and without consideration of body composition, then this will not be enough. I believe BMI can be considered as a screening starting point, but we need to understand the body composition of fat and muscle too,” he said.

“We recommend this new cutoff point be applied in clinical settings when screening individuals for obesity in Italy,” El Ghoch asserted.

BMI Limitations Misses Body Composition 

If obesity is a chronic disease defined as excessive accumulation of body fat and leading to increased risk for disease, disability, and mortality, then “the identification of obesity based on body fat measurements is the most reliable method,” but he acknowledged that measuring this is not readily available in most clinical settings, and as such, “simple BMI has a place,” Dr. El Ghoch said.

“Use of BMI has its limitations, for example, it does not distinguish between body composition compartments — so between muscle and fat mass, nor does it detect changes across the lifespan of an individual [for example, the shift to more fat and less muscle with age] and it varies by ethnicity,” he pointed out. 

This led El Ghoch to ask whether using BMI as a threshold for obesity was suitable for all age groups. 

The researchers included 4800 participants of mixed gender aged 40-80 years of age. Based on the WHO’s BMI classification, 1087 people had normal body weight, 1826 had overweight, and 1887 had obesity. The participants were then categorized by adiposity status on the basis of the total body fat percentage as measured by dual-energy x-ray absorptiometry (DXA), and obesity was predicted by statistical analysis.

The analysis found that around 38% of men and 41% of women had a BMI ≥ 30 based on conventional BMI criteria, indicating obesity. However, when assessed according to body fat percentage, around 71% of the men and 64% of the women were determined to have obesity. 

Dr. El Ghoch and his colleagues calculated that a lower BMI cutoff of around 27 for obesity in people older than 40 years may be more appropriate than the existing BMI threshold of 30. 

The researchers noted some limitations of their work, including that it was a single-center, cross-sectional observational study conducted in one area of Italy. In addition, they did not account for possible confounders, such as dietary habits, and physical activity patterns, and sleep health, all of which can increase the likelihood of obesity and may interact with age-related differences. 

Missing a Significant Proportion of the Population at Risk for Obesity-Related Diseases

In an interview, Luca Busetto, MD, obesity specialist and research assistant at the Center for the Study and the Integrated Treatment of the Obesity, University of Padova, Italy, and local ECO president, commented on the study and the issue of BMI as a measure and threshold. “I think the problem we face with a classic cutoff using BMI is that we miss a significant group of people who have BMI less than 30 but have a high fat mass,” he said, adding, “but these people have the same risk of developing chronic diseases as those people with higher BMI. If they have a bad fat distribution, then their risk of complications is even higher. 

“Dr El Ghoch’s study underlines the lack of treatment for this significant part of the population,” he remarked. “We also need to use waist circumference and waist-to-height [ratio] as additional measures in this population.” 

Dr. Busetto also presented a population-based study at ECO that included over 400,000 people with a follow-up of 8 years. “We found the risk of developing obesity complications, including type 2 diabetes, hypertension, osteoarthritis, and cardiovascular disease, is not only dependent on BMI but [also] dependent on your waist-to-height ratio,” he said, highlighting that “some of these complications are only predicted by the waist-to-height ratio and not by your BMI — in particular cardiovascular diseases.

“I honestly think any screening process today needs to include both BMI and waist-to-height ratio. Having a DXA scan is great in a specialist setting, but routinely we need a measure that is valid in every office in every country and small town.”

Francesco Rubino, MD, chair of metabolic and bariatric surgery at King›s College London, United Kingdom, also remarked that understanding the changes in fat and lean mass proportions and distribution in middle years will affect health in later life, and importantly from a clinical perspective, it is a time where there is still some opportunity to intervene. 

Reflecting further on how it underscores the limitations of BMI in misclassifying people as having obesity or not, Rubino asked, “Importantly, does this make a difference to health and longevity? Really, we need an active measure of adiposity first, and then even if we do say someone has obesity — so excess adiposity — then does this translate into illness, because [excess adiposity] does not translate into disease for every individual?

“Any measure we use as a diagnostic criterion needs to reflect the ongoing disease in an individual, not only the risk of future disease — because not every person experiences this. As a doctor, we deal with the individual and how the diagnosis of disease relates to the individual in a clinic now, as well as the risk of tomorrow,” he concluded. 

Dr. El Ghoch declares no conflicts of interest. Dr. Rubino disclosed that he has received research grants from Novo Nordisk, Medtronic, and Johnson & Johnson. He has undertaken paid consultancy work for GI Dynamics and received honoraria for lectures from Medtronic, Novo Nordisk, and Johnson & Johnson. He is a member of the data safety monitoring board for GT Metabolic Solutions and has provided scientific advice to Keyron, MetaDeq, GHP Scientific, and ViBo Health for no remuneration. Dr. Busetto discloses relationships with Burno Farmaceutici, Novo Nordisk, PronoKal, Rhythm, and Therascience. 

A version of this article appeared on Medscape.com.