Diversity in Medicine

WASHINGTON ­— Mailing outreach notices for colonoscopies or fecal immunochemical test (FIT) kits may be a great way to increase colorectal cancer (CRC) screening in younger adults, according to a study presented at the annual Digestive Disease Week^® (DDW).

In a comparison of four outreach approaches, sending a FIT kit to people between the ages of 45 and 49 via mail garnered better response rates than opt-in strategies to participate in FIT, inviting them to undergo colonoscopy, or asking them to choose between FIT or colonoscopy. At the same time, when given a choice between colonoscopy and FIT, colonoscopy was preferred across all racial and ethnic groups.

“It is well known that colorectal cancer is the second-leading cause of cancer-related deaths in the United States. The good news is that for the past several decades, we’ve seen a decline in colorectal cancer incidence and mortality in ages 50 and above. However, there has been a recent rise in incidence and mortality in people younger than 50,” said lead author Rebecca Ekeanyanwu, a third-year medical student at Meharry Medical College School of Medicine in Nashville, Tennessee. She was awarded the 2024 AGA Institute Council Healthcare Disparities Research Award for the top oral presentation for research in racial and ethnic health care disparities.

swuspivitricrostijojawriu

Lebwohl_Benjamin_NY_web.jpg

WASHINGTON ­— Mailing outreach notices for colonoscopies or fecal immunochemical test (FIT) kits may be a great way to increase colorectal cancer (CRC) screening in younger adults, according to a study presented at the annual Digestive Disease Week^® (DDW).

In a comparison of four outreach approaches, sending a FIT kit to people between the ages of 45 and 49 via mail garnered better response rates than opt-in strategies to participate in FIT, inviting them to undergo colonoscopy, or asking them to choose between FIT or colonoscopy. At the same time, when given a choice between colonoscopy and FIT, colonoscopy was preferred across all racial and ethnic groups.

“It is well known that colorectal cancer is the second-leading cause of cancer-related deaths in the United States. The good news is that for the past several decades, we’ve seen a decline in colorectal cancer incidence and mortality in ages 50 and above. However, there has been a recent rise in incidence and mortality in people younger than 50,” said lead author Rebecca Ekeanyanwu, a third-year medical student at Meharry Medical College School of Medicine in Nashville, Tennessee. She was awarded the 2024 AGA Institute Council Healthcare Disparities Research Award for the top oral presentation for research in racial and ethnic health care disparities.

swuspivitricrostijojawriu

Lebwohl_Benjamin_NY_web.jpg

WASHINGTON ­— Mailing outreach notices for colonoscopies or fecal immunochemical test (FIT) kits may be a great way to increase colorectal cancer (CRC) screening in younger adults, according to a study presented at the annual Digestive Disease Week^® (DDW).

In a comparison of four outreach approaches, sending a FIT kit to people between the ages of 45 and 49 via mail garnered better response rates than opt-in strategies to participate in FIT, inviting them to undergo colonoscopy, or asking them to choose between FIT or colonoscopy. At the same time, when given a choice between colonoscopy and FIT, colonoscopy was preferred across all racial and ethnic groups.

“It is well known that colorectal cancer is the second-leading cause of cancer-related deaths in the United States. The good news is that for the past several decades, we’ve seen a decline in colorectal cancer incidence and mortality in ages 50 and above. However, there has been a recent rise in incidence and mortality in people younger than 50,” said lead author Rebecca Ekeanyanwu, a third-year medical student at Meharry Medical College School of Medicine in Nashville, Tennessee. She was awarded the 2024 AGA Institute Council Healthcare Disparities Research Award for the top oral presentation for research in racial and ethnic health care disparities.

swuspivitricrostijojawriu

Lebwohl_Benjamin_NY_web.jpg

Welcome everyone. I’m Dr. John White. I’m the chief medical officer at WebMD. Does your biologic sex impact your health? Does it have any play in how you’re diagnosed, how you’re treated in terms of what symptoms you have? Of course it does. We all know that. But that’s not something that many people believed 5, 10 years ago, certainly not 20 years ago. And it was only because of leaders like my guest today, Phyllis Greenberger, who really championed the need for research on women’s health. She has a new book out, which I love. It’s called Sex Cells: the Fight to Overcome Bias and Discrimination in Women’s Healthcare. Please welcome my very good friend, Phyllis Greenberger.

Thank you.

Phyllis, It’s great to see you today.

It’s great to see you as well.

Now, you and I have been talking about this for easily 2 decades.

At least.

And some people think, oh, of course it makes sense. Although I saw you disagreeing that not everyone still believes that. But what has been that journey? Why has it been so hard to make people understand, as you point out early on in your book, women are not smaller men?

I think the basic reason was that it was just believed that men and women were the same except for their reproductive organs. So minus the reproductive organs, whether it was a device, a diagnostic, or therapeutic, if it was used and successful on a male, that it would be successful on a female. We’re really very far from understanding the differences, and there’s still a lot of distrust and disbelief and ignorance about it. And so there’s still a long way to go.

But you talk about that in the book, that there’s still a long way to go. Why is that? What’s the biggest obstacle? Is it just misinformation, lack of information? People don’t understand the science? There’s still resistance in some areas. Why is that?

I think it’s misinformation, and I gave a presentation, I don’t know how many years ago, at least 20 years ago, about the curriculum. And at the time, there was no women’s health in the curriculum. It was health. So if it was on cardiovascular issues or on osteoporosis, it was sort of the basic. And at the time, there would maybe be one woman whose job was women’s health, and she’d have an office, and otherwise there was nothing. And maybe they talked about breast cancer, who knows. But I spoke to someone just the other day, in view of all the attention that the book is getting now, whether that’s changed, whether it’s necessary and required. And she said it’s not. So, it’s not necessarily on the curriculum of all research and medical institutions, and even if women’s health, quote unquote, is on the curriculum, it doesn’t mean that they’re really looking at sex differences. And the difference is obvious. I mean, gender is really, it’s a social construct, but biological sex is how disease occurs and develops. And so if you’re not looking, and because there’s so little research now on sex differences that I don’t even know, I mean, how much you could actually teach.

So what needs to change? This book is a manifesto in many ways in how we need to include women; we need to make research more inclusive of everyone. But we’re not there yet. So what needs to change, Phyllis?

During this whole saga of trying to get people to listen to me and to the society, we really started out just looking at clinical trials and that, as you mentioned, I mean, there are issues in rural communities. There’s travel issues for women and child care. There’s a lot of disbelief or fear of clinical trials in some ethnicities. I do think, going to the future, that technology can help that. I mean, if people have broadband, which of course is also an issue in rural areas.

What could women do today? What should women listeners hear and then be doing? Should they be saying something to their doctor? Should they be asking specific questions? When they interact with the health care system, how can they make sure they’re getting the best care that’s appropriate for them when we know that sex cells matter?

Well, that’s a good question. It depends on, frankly, if your doctor is aware of this, if he or she has learned anything about this in school, which, I had already said, we’re not sure about that because research is still ongoing and there’s so much we don’t know. So I mean, you used to think, or I used to think, that you go to, you want a physician who’s older and more experienced. But now I think you should be going to a physician who’s younger and hopefully has learned about this, because the physicians that were educated years ago and have been practicing for 20, 30 years, I don’t know how much they know about this, whether they’re even aware of it.

Phyllis, you are a woman of action. You’ve lived in the DC area. You have championed legislative reforms, executive agendas. What do you want done now? What needs to be changed today? The curriculum is going to take time, but what else needs to change?

That’s a good question. I mean, if curriculum is going to take a while and you can ask your doctor if he prescribes the medication, whether it’s been tested on women, but then if it hasn’t been tested on women, but it’s the only thing that there is for your condition, I mean, so it’s very difficult. The Biden administration, as you know, just allocated a hundred million dollars for women’s health research.

What do you hope to accomplish with this book?

Well, what I’m hoping is that I spoke to someone at AMWA and I’m hoping — and AMWA is an association for women medical students. And I’m hoping that’s the audience. The audience needs to be. I mean, obviously everybody that I know that’s not a doctor that’s read it, found it fascinating and didn’t know a lot of the stuff that was in it. So I think it’s an interesting book anyway, and I think women should be aware of it. But really I think it needs to be for medical students.

And to your credit, you built the Society for Women’s Health Research into a powerful force in Washington under your tenure in really promoting the need for Office of Women’s Health and Research in general. The book is entitled Sex Cells, the Fight to Overcome Bias and Discrimination in Women’s Healthcare. Phyllis Greenberger, thank you so much for all that you’ve done for women’s health, for women’s research. We wouldn’t be where we are today if it wasn’t for you. So thanks.

Thank you very much, John. Thank you. I appreciate the opportunity.

Dr. Whyte, is chief medical officer, WebMD, New York, NY. He has disclosed no relevant financial relationships. Ms. Greenberger is a women’s health advocate and author of “Sex Cells: The Fight to Overcome Bias and Discrimination in Women’s Healthcare”

This interview originally appeared on WebMD on May 23, 2024. A version of this article appeared on Medscape.com .

Welcome everyone. I’m Dr. John White. I’m the chief medical officer at WebMD. Does your biologic sex impact your health? Does it have any play in how you’re diagnosed, how you’re treated in terms of what symptoms you have? Of course it does. We all know that. But that’s not something that many people believed 5, 10 years ago, certainly not 20 years ago. And it was only because of leaders like my guest today, Phyllis Greenberger, who really championed the need for research on women’s health. She has a new book out, which I love. It’s called Sex Cells: the Fight to Overcome Bias and Discrimination in Women’s Healthcare. Please welcome my very good friend, Phyllis Greenberger.

Thank you.

Phyllis, It’s great to see you today.

It’s great to see you as well.

Now, you and I have been talking about this for easily 2 decades.

At least.

And some people think, oh, of course it makes sense. Although I saw you disagreeing that not everyone still believes that. But what has been that journey? Why has it been so hard to make people understand, as you point out early on in your book, women are not smaller men?

I think the basic reason was that it was just believed that men and women were the same except for their reproductive organs. So minus the reproductive organs, whether it was a device, a diagnostic, or therapeutic, if it was used and successful on a male, that it would be successful on a female. We’re really very far from understanding the differences, and there’s still a lot of distrust and disbelief and ignorance about it. And so there’s still a long way to go.

But you talk about that in the book, that there’s still a long way to go. Why is that? What’s the biggest obstacle? Is it just misinformation, lack of information? People don’t understand the science? There’s still resistance in some areas. Why is that?

I think it’s misinformation, and I gave a presentation, I don’t know how many years ago, at least 20 years ago, about the curriculum. And at the time, there was no women’s health in the curriculum. It was health. So if it was on cardiovascular issues or on osteoporosis, it was sort of the basic. And at the time, there would maybe be one woman whose job was women’s health, and she’d have an office, and otherwise there was nothing. And maybe they talked about breast cancer, who knows. But I spoke to someone just the other day, in view of all the attention that the book is getting now, whether that’s changed, whether it’s necessary and required. And she said it’s not. So, it’s not necessarily on the curriculum of all research and medical institutions, and even if women’s health, quote unquote, is on the curriculum, it doesn’t mean that they’re really looking at sex differences. And the difference is obvious. I mean, gender is really, it’s a social construct, but biological sex is how disease occurs and develops. And so if you’re not looking, and because there’s so little research now on sex differences that I don’t even know, I mean, how much you could actually teach.

So what needs to change? This book is a manifesto in many ways in how we need to include women; we need to make research more inclusive of everyone. But we’re not there yet. So what needs to change, Phyllis?

During this whole saga of trying to get people to listen to me and to the society, we really started out just looking at clinical trials and that, as you mentioned, I mean, there are issues in rural communities. There’s travel issues for women and child care. There’s a lot of disbelief or fear of clinical trials in some ethnicities. I do think, going to the future, that technology can help that. I mean, if people have broadband, which of course is also an issue in rural areas.

What could women do today? What should women listeners hear and then be doing? Should they be saying something to their doctor? Should they be asking specific questions? When they interact with the health care system, how can they make sure they’re getting the best care that’s appropriate for them when we know that sex cells matter?

Well, that’s a good question. It depends on, frankly, if your doctor is aware of this, if he or she has learned anything about this in school, which, I had already said, we’re not sure about that because research is still ongoing and there’s so much we don’t know. So I mean, you used to think, or I used to think, that you go to, you want a physician who’s older and more experienced. But now I think you should be going to a physician who’s younger and hopefully has learned about this, because the physicians that were educated years ago and have been practicing for 20, 30 years, I don’t know how much they know about this, whether they’re even aware of it.

Phyllis, you are a woman of action. You’ve lived in the DC area. You have championed legislative reforms, executive agendas. What do you want done now? What needs to be changed today? The curriculum is going to take time, but what else needs to change?

That’s a good question. I mean, if curriculum is going to take a while and you can ask your doctor if he prescribes the medication, whether it’s been tested on women, but then if it hasn’t been tested on women, but it’s the only thing that there is for your condition, I mean, so it’s very difficult. The Biden administration, as you know, just allocated a hundred million dollars for women’s health research.

What do you hope to accomplish with this book?

Well, what I’m hoping is that I spoke to someone at AMWA and I’m hoping — and AMWA is an association for women medical students. And I’m hoping that’s the audience. The audience needs to be. I mean, obviously everybody that I know that’s not a doctor that’s read it, found it fascinating and didn’t know a lot of the stuff that was in it. So I think it’s an interesting book anyway, and I think women should be aware of it. But really I think it needs to be for medical students.

And to your credit, you built the Society for Women’s Health Research into a powerful force in Washington under your tenure in really promoting the need for Office of Women’s Health and Research in general. The book is entitled Sex Cells, the Fight to Overcome Bias and Discrimination in Women’s Healthcare. Phyllis Greenberger, thank you so much for all that you’ve done for women’s health, for women’s research. We wouldn’t be where we are today if it wasn’t for you. So thanks.

Thank you very much, John. Thank you. I appreciate the opportunity.

Dr. Whyte, is chief medical officer, WebMD, New York, NY. He has disclosed no relevant financial relationships. Ms. Greenberger is a women’s health advocate and author of “Sex Cells: The Fight to Overcome Bias and Discrimination in Women’s Healthcare”

This interview originally appeared on WebMD on May 23, 2024. A version of this article appeared on Medscape.com .

Welcome everyone. I’m Dr. John White. I’m the chief medical officer at WebMD. Does your biologic sex impact your health? Does it have any play in how you’re diagnosed, how you’re treated in terms of what symptoms you have? Of course it does. We all know that. But that’s not something that many people believed 5, 10 years ago, certainly not 20 years ago. And it was only because of leaders like my guest today, Phyllis Greenberger, who really championed the need for research on women’s health. She has a new book out, which I love. It’s called Sex Cells: the Fight to Overcome Bias and Discrimination in Women’s Healthcare. Please welcome my very good friend, Phyllis Greenberger.

Thank you.

Phyllis, It’s great to see you today.

It’s great to see you as well.

Now, you and I have been talking about this for easily 2 decades.

At least.

And some people think, oh, of course it makes sense. Although I saw you disagreeing that not everyone still believes that. But what has been that journey? Why has it been so hard to make people understand, as you point out early on in your book, women are not smaller men?

I think the basic reason was that it was just believed that men and women were the same except for their reproductive organs. So minus the reproductive organs, whether it was a device, a diagnostic, or therapeutic, if it was used and successful on a male, that it would be successful on a female. We’re really very far from understanding the differences, and there’s still a lot of distrust and disbelief and ignorance about it. And so there’s still a long way to go.

But you talk about that in the book, that there’s still a long way to go. Why is that? What’s the biggest obstacle? Is it just misinformation, lack of information? People don’t understand the science? There’s still resistance in some areas. Why is that?

I think it’s misinformation, and I gave a presentation, I don’t know how many years ago, at least 20 years ago, about the curriculum. And at the time, there was no women’s health in the curriculum. It was health. So if it was on cardiovascular issues or on osteoporosis, it was sort of the basic. And at the time, there would maybe be one woman whose job was women’s health, and she’d have an office, and otherwise there was nothing. And maybe they talked about breast cancer, who knows. But I spoke to someone just the other day, in view of all the attention that the book is getting now, whether that’s changed, whether it’s necessary and required. And she said it’s not. So, it’s not necessarily on the curriculum of all research and medical institutions, and even if women’s health, quote unquote, is on the curriculum, it doesn’t mean that they’re really looking at sex differences. And the difference is obvious. I mean, gender is really, it’s a social construct, but biological sex is how disease occurs and develops. And so if you’re not looking, and because there’s so little research now on sex differences that I don’t even know, I mean, how much you could actually teach.

So what needs to change? This book is a manifesto in many ways in how we need to include women; we need to make research more inclusive of everyone. But we’re not there yet. So what needs to change, Phyllis?

During this whole saga of trying to get people to listen to me and to the society, we really started out just looking at clinical trials and that, as you mentioned, I mean, there are issues in rural communities. There’s travel issues for women and child care. There’s a lot of disbelief or fear of clinical trials in some ethnicities. I do think, going to the future, that technology can help that. I mean, if people have broadband, which of course is also an issue in rural areas.

What could women do today? What should women listeners hear and then be doing? Should they be saying something to their doctor? Should they be asking specific questions? When they interact with the health care system, how can they make sure they’re getting the best care that’s appropriate for them when we know that sex cells matter?

Well, that’s a good question. It depends on, frankly, if your doctor is aware of this, if he or she has learned anything about this in school, which, I had already said, we’re not sure about that because research is still ongoing and there’s so much we don’t know. So I mean, you used to think, or I used to think, that you go to, you want a physician who’s older and more experienced. But now I think you should be going to a physician who’s younger and hopefully has learned about this, because the physicians that were educated years ago and have been practicing for 20, 30 years, I don’t know how much they know about this, whether they’re even aware of it.

Phyllis, you are a woman of action. You’ve lived in the DC area. You have championed legislative reforms, executive agendas. What do you want done now? What needs to be changed today? The curriculum is going to take time, but what else needs to change?

That’s a good question. I mean, if curriculum is going to take a while and you can ask your doctor if he prescribes the medication, whether it’s been tested on women, but then if it hasn’t been tested on women, but it’s the only thing that there is for your condition, I mean, so it’s very difficult. The Biden administration, as you know, just allocated a hundred million dollars for women’s health research.

What do you hope to accomplish with this book?

Well, what I’m hoping is that I spoke to someone at AMWA and I’m hoping — and AMWA is an association for women medical students. And I’m hoping that’s the audience. The audience needs to be. I mean, obviously everybody that I know that’s not a doctor that’s read it, found it fascinating and didn’t know a lot of the stuff that was in it. So I think it’s an interesting book anyway, and I think women should be aware of it. But really I think it needs to be for medical students.

And to your credit, you built the Society for Women’s Health Research into a powerful force in Washington under your tenure in really promoting the need for Office of Women’s Health and Research in general. The book is entitled Sex Cells, the Fight to Overcome Bias and Discrimination in Women’s Healthcare. Phyllis Greenberger, thank you so much for all that you’ve done for women’s health, for women’s research. We wouldn’t be where we are today if it wasn’t for you. So thanks.

Thank you very much, John. Thank you. I appreciate the opportunity.

Dr. Whyte, is chief medical officer, WebMD, New York, NY. He has disclosed no relevant financial relationships. Ms. Greenberger is a women’s health advocate and author of “Sex Cells: The Fight to Overcome Bias and Discrimination in Women’s Healthcare”

This interview originally appeared on WebMD on May 23, 2024. A version of this article appeared on Medscape.com .

Sexual harassment, bullying, and gender bias are still very real occupational hazards for ob.gyn. trainees and practitioners alike — even in this female-dominated field, a systematic evidence review found.

Published in JAMA Network Open, by Ankita Gupta, MD, MPH, a urogynecology and reconstructive pelvic surgery specialist at the University of Louisville in Kentucky, and colleagues, the analysis found rates as high as 71% for sexual harassment, coercion, or unwanted advances. It also noted high rates of bullying, gender bias, and microaggressions. “We were struck by the continued high rates of harassment,” Dr. Gupta said in an interview. “Much of the literature within academic medicine has suggested the unequal distribution of women among medical specialties is the cause of sexual and gender harassment, but despite ob.gyns. being overwhelmingly female, we found that gender bias continues to occur at alarmingly high rates.”

Furthermore, among studies where this was reported, almost 25% of respondents had experienced sexual coercion. Not unexpectedly, this mistreatment often went unreported to institutional leadership out of fear of retaliation.

“We were also surprised to find a high rate of 51% for sexual harassment among male respondents as well, suggesting that both gender and power dynamics play a role in harassment,” Dr. Gupta said.

The primary perpetrators of unwanted behaviors were other doctors, overwhelmingly attending physicians, although residents and fellows were also identified as perpetrators, especially when harassment was reported by medical students, she added. “This once again points to the underreported abuse of professional power.” Women were rarely the perpetrators — just 10% — although they were the perpetrators in 57.7% of cases when the victim was male.

“Another interesting aspect of this is gender bias and microaggressions in the operating room,” she continued. While female surgeons often experience bias coming from OR staff, the review found that 94.4% of female ob.gyns. had been mistaken for non-physicians, 88.9% had pre-apologized for asking for something from a surgical technician or nurse, and 83.3% needed to make such requests multiple times. “These instances demonstrate gender bias in both male and female operating room staff toward female ob.gyns.”

Undermining and bullying behaviors are common in surgical specialties, Dr. Gupta explained, and the tantrums, swearing, and humiliation of trainees may be considered as much a rite of passage as the long hours. “As a trainee, you are taught to ignore such behavior as reporting it comes with fear of repercussions.”

This review bore this out, with only 8%-12% of respondents across studies reporting harassment and then predominantly to another trainee. “Sexual harassment and microaggressions can further lead to loss of career opportunities and burnout and I have come across many ob.gyns. who have chosen alternate paths owing to negative experiences,” Dr. Gupta said.

The Analysis

A joint effort by the Society of Gynecologic Surgeons and the and Society of Gynecologic Oncology, the analysis looked at existing literature from inception through June 2023.

A total of 10 eligible studies with 5852 participants addressed prevalence and 12 eligible studies in 2906 participants addressed interventions. Among the findings across different studies:

• Sexual harassment was noted by 250 of 907 physicians (27.6%) and 181 of 255 female gynecologic oncologists (70.9%).
• Workplace discrimination ranged from 142 of 249 female gynecologic oncologists (57.0%) to 354 of 527 female gynecologic oncologists (67.2%); among male gynecologic oncologists 138 of 358 (38.5%) reported discrimination.
• Bullying was reported by 131 of 248 female gynecologic oncologists (52.8%).
• Ob.gyn. trainees commonly experienced sexual harassment: 253 of 366 respondents (69.1%); this included gender harassment, unwanted sexual attention, and sexual coercion.
• Mistreatment of medical students during ob.gyn. rotation was indicated by 168 of 668 (25.1%).
• Perpetrators of harassment included physicians (30.1%), other trainees (13.1%), and OR staff (7.7%).

These findings are consistent with those of other recent investigations. A systematic review from 2022 found that 25% of ob.gyn., 32% of general surgery, and 21% of medical interns and students reported bullying .

In another 2022 review, in which ob.gyn. program directors were mainly women and department chairs mainly men, the prevalence of sexual harassment did not differ based on the gender of program directors and chairs.

A study from 2021 reported that 27% of academic surgical trainees, including ob.gyns., reported sexual harassment.

Going back to 2004, a study across multiple medical specialties found that ob.gyn. was second only to general surgery as the specialty associated with the highest rates of sexual harassment.

Despite institutional anti-discrimination policies, real-life interventions seem ineffective. “Disappointingly, we found that most interventions to address harassment had not been appropriately evaluated and did not show a decrease in sexual harassment,” Dr. Gupta said. “Interventions that were successful in reducing mistreatment of trainees required institutional buy-in at multiple levels, including leadership, management, and administration,” she said.

Multi-pronged strategies might include providing tools to educate healthcare staff about harassment and empowering bystanders to intervene when encountering such situations. “Further, independent offices where all complaints are evaluated by an intermediary third party and requiring professionalism to be a criterion for promotion criterion can be useful strategies,” she said.

She noted that residents may model harassing behavior perpetrated by senior attending physicians, thereby creating a cycle of mistreatment. “Equipping clinicians to be better surgical educators, providing clinical support, and modeling positive behavior may help disrupt the culture of harassment.” While the best solutions may be unclear, it is clear that much work remains to be done before the ob.gyn. working environment catches up to official institutional anti-discrimination policies.

This study was supported by the Society of Gynecologic Surgeons. Dr. Gupta disclosed no competing interests. Several coauthors disclosed relationships with multiple pharmaceutical or biomedical companies.

Sexual harassment, bullying, and gender bias are still very real occupational hazards for ob.gyn. trainees and practitioners alike — even in this female-dominated field, a systematic evidence review found.

Published in JAMA Network Open, by Ankita Gupta, MD, MPH, a urogynecology and reconstructive pelvic surgery specialist at the University of Louisville in Kentucky, and colleagues, the analysis found rates as high as 71% for sexual harassment, coercion, or unwanted advances. It also noted high rates of bullying, gender bias, and microaggressions. “We were struck by the continued high rates of harassment,” Dr. Gupta said in an interview. “Much of the literature within academic medicine has suggested the unequal distribution of women among medical specialties is the cause of sexual and gender harassment, but despite ob.gyns. being overwhelmingly female, we found that gender bias continues to occur at alarmingly high rates.”

Furthermore, among studies where this was reported, almost 25% of respondents had experienced sexual coercion. Not unexpectedly, this mistreatment often went unreported to institutional leadership out of fear of retaliation.

“We were also surprised to find a high rate of 51% for sexual harassment among male respondents as well, suggesting that both gender and power dynamics play a role in harassment,” Dr. Gupta said.

The primary perpetrators of unwanted behaviors were other doctors, overwhelmingly attending physicians, although residents and fellows were also identified as perpetrators, especially when harassment was reported by medical students, she added. “This once again points to the underreported abuse of professional power.” Women were rarely the perpetrators — just 10% — although they were the perpetrators in 57.7% of cases when the victim was male.

“Another interesting aspect of this is gender bias and microaggressions in the operating room,” she continued. While female surgeons often experience bias coming from OR staff, the review found that 94.4% of female ob.gyns. had been mistaken for non-physicians, 88.9% had pre-apologized for asking for something from a surgical technician or nurse, and 83.3% needed to make such requests multiple times. “These instances demonstrate gender bias in both male and female operating room staff toward female ob.gyns.”

Undermining and bullying behaviors are common in surgical specialties, Dr. Gupta explained, and the tantrums, swearing, and humiliation of trainees may be considered as much a rite of passage as the long hours. “As a trainee, you are taught to ignore such behavior as reporting it comes with fear of repercussions.”

This review bore this out, with only 8%-12% of respondents across studies reporting harassment and then predominantly to another trainee. “Sexual harassment and microaggressions can further lead to loss of career opportunities and burnout and I have come across many ob.gyns. who have chosen alternate paths owing to negative experiences,” Dr. Gupta said.

The Analysis

A joint effort by the Society of Gynecologic Surgeons and the and Society of Gynecologic Oncology, the analysis looked at existing literature from inception through June 2023.

A total of 10 eligible studies with 5852 participants addressed prevalence and 12 eligible studies in 2906 participants addressed interventions. Among the findings across different studies:

• Sexual harassment was noted by 250 of 907 physicians (27.6%) and 181 of 255 female gynecologic oncologists (70.9%).
• Workplace discrimination ranged from 142 of 249 female gynecologic oncologists (57.0%) to 354 of 527 female gynecologic oncologists (67.2%); among male gynecologic oncologists 138 of 358 (38.5%) reported discrimination.
• Bullying was reported by 131 of 248 female gynecologic oncologists (52.8%).
• Ob.gyn. trainees commonly experienced sexual harassment: 253 of 366 respondents (69.1%); this included gender harassment, unwanted sexual attention, and sexual coercion.
• Mistreatment of medical students during ob.gyn. rotation was indicated by 168 of 668 (25.1%).
• Perpetrators of harassment included physicians (30.1%), other trainees (13.1%), and OR staff (7.7%).

These findings are consistent with those of other recent investigations. A systematic review from 2022 found that 25% of ob.gyn., 32% of general surgery, and 21% of medical interns and students reported bullying .

In another 2022 review, in which ob.gyn. program directors were mainly women and department chairs mainly men, the prevalence of sexual harassment did not differ based on the gender of program directors and chairs.

A study from 2021 reported that 27% of academic surgical trainees, including ob.gyns., reported sexual harassment.

Going back to 2004, a study across multiple medical specialties found that ob.gyn. was second only to general surgery as the specialty associated with the highest rates of sexual harassment.

Despite institutional anti-discrimination policies, real-life interventions seem ineffective. “Disappointingly, we found that most interventions to address harassment had not been appropriately evaluated and did not show a decrease in sexual harassment,” Dr. Gupta said. “Interventions that were successful in reducing mistreatment of trainees required institutional buy-in at multiple levels, including leadership, management, and administration,” she said.

Multi-pronged strategies might include providing tools to educate healthcare staff about harassment and empowering bystanders to intervene when encountering such situations. “Further, independent offices where all complaints are evaluated by an intermediary third party and requiring professionalism to be a criterion for promotion criterion can be useful strategies,” she said.

She noted that residents may model harassing behavior perpetrated by senior attending physicians, thereby creating a cycle of mistreatment. “Equipping clinicians to be better surgical educators, providing clinical support, and modeling positive behavior may help disrupt the culture of harassment.” While the best solutions may be unclear, it is clear that much work remains to be done before the ob.gyn. working environment catches up to official institutional anti-discrimination policies.

This study was supported by the Society of Gynecologic Surgeons. Dr. Gupta disclosed no competing interests. Several coauthors disclosed relationships with multiple pharmaceutical or biomedical companies.

Sexual harassment, bullying, and gender bias are still very real occupational hazards for ob.gyn. trainees and practitioners alike — even in this female-dominated field, a systematic evidence review found.

Published in JAMA Network Open, by Ankita Gupta, MD, MPH, a urogynecology and reconstructive pelvic surgery specialist at the University of Louisville in Kentucky, and colleagues, the analysis found rates as high as 71% for sexual harassment, coercion, or unwanted advances. It also noted high rates of bullying, gender bias, and microaggressions. “We were struck by the continued high rates of harassment,” Dr. Gupta said in an interview. “Much of the literature within academic medicine has suggested the unequal distribution of women among medical specialties is the cause of sexual and gender harassment, but despite ob.gyns. being overwhelmingly female, we found that gender bias continues to occur at alarmingly high rates.”

Furthermore, among studies where this was reported, almost 25% of respondents had experienced sexual coercion. Not unexpectedly, this mistreatment often went unreported to institutional leadership out of fear of retaliation.

“We were also surprised to find a high rate of 51% for sexual harassment among male respondents as well, suggesting that both gender and power dynamics play a role in harassment,” Dr. Gupta said.

The primary perpetrators of unwanted behaviors were other doctors, overwhelmingly attending physicians, although residents and fellows were also identified as perpetrators, especially when harassment was reported by medical students, she added. “This once again points to the underreported abuse of professional power.” Women were rarely the perpetrators — just 10% — although they were the perpetrators in 57.7% of cases when the victim was male.

“Another interesting aspect of this is gender bias and microaggressions in the operating room,” she continued. While female surgeons often experience bias coming from OR staff, the review found that 94.4% of female ob.gyns. had been mistaken for non-physicians, 88.9% had pre-apologized for asking for something from a surgical technician or nurse, and 83.3% needed to make such requests multiple times. “These instances demonstrate gender bias in both male and female operating room staff toward female ob.gyns.”

Undermining and bullying behaviors are common in surgical specialties, Dr. Gupta explained, and the tantrums, swearing, and humiliation of trainees may be considered as much a rite of passage as the long hours. “As a trainee, you are taught to ignore such behavior as reporting it comes with fear of repercussions.”

This review bore this out, with only 8%-12% of respondents across studies reporting harassment and then predominantly to another trainee. “Sexual harassment and microaggressions can further lead to loss of career opportunities and burnout and I have come across many ob.gyns. who have chosen alternate paths owing to negative experiences,” Dr. Gupta said.

The Analysis

A joint effort by the Society of Gynecologic Surgeons and the and Society of Gynecologic Oncology, the analysis looked at existing literature from inception through June 2023.

A total of 10 eligible studies with 5852 participants addressed prevalence and 12 eligible studies in 2906 participants addressed interventions. Among the findings across different studies:

• Sexual harassment was noted by 250 of 907 physicians (27.6%) and 181 of 255 female gynecologic oncologists (70.9%).
• Workplace discrimination ranged from 142 of 249 female gynecologic oncologists (57.0%) to 354 of 527 female gynecologic oncologists (67.2%); among male gynecologic oncologists 138 of 358 (38.5%) reported discrimination.
• Bullying was reported by 131 of 248 female gynecologic oncologists (52.8%).
• Ob.gyn. trainees commonly experienced sexual harassment: 253 of 366 respondents (69.1%); this included gender harassment, unwanted sexual attention, and sexual coercion.
• Mistreatment of medical students during ob.gyn. rotation was indicated by 168 of 668 (25.1%).
• Perpetrators of harassment included physicians (30.1%), other trainees (13.1%), and OR staff (7.7%).

These findings are consistent with those of other recent investigations. A systematic review from 2022 found that 25% of ob.gyn., 32% of general surgery, and 21% of medical interns and students reported bullying .

In another 2022 review, in which ob.gyn. program directors were mainly women and department chairs mainly men, the prevalence of sexual harassment did not differ based on the gender of program directors and chairs.

A study from 2021 reported that 27% of academic surgical trainees, including ob.gyns., reported sexual harassment.

Going back to 2004, a study across multiple medical specialties found that ob.gyn. was second only to general surgery as the specialty associated with the highest rates of sexual harassment.

Despite institutional anti-discrimination policies, real-life interventions seem ineffective. “Disappointingly, we found that most interventions to address harassment had not been appropriately evaluated and did not show a decrease in sexual harassment,” Dr. Gupta said. “Interventions that were successful in reducing mistreatment of trainees required institutional buy-in at multiple levels, including leadership, management, and administration,” she said.

Multi-pronged strategies might include providing tools to educate healthcare staff about harassment and empowering bystanders to intervene when encountering such situations. “Further, independent offices where all complaints are evaluated by an intermediary third party and requiring professionalism to be a criterion for promotion criterion can be useful strategies,” she said.

She noted that residents may model harassing behavior perpetrated by senior attending physicians, thereby creating a cycle of mistreatment. “Equipping clinicians to be better surgical educators, providing clinical support, and modeling positive behavior may help disrupt the culture of harassment.” While the best solutions may be unclear, it is clear that much work remains to be done before the ob.gyn. working environment catches up to official institutional anti-discrimination policies.

This study was supported by the Society of Gynecologic Surgeons. Dr. Gupta disclosed no competing interests. Several coauthors disclosed relationships with multiple pharmaceutical or biomedical companies.

BOSTON — Primary care clinicians caring for patients with intellectual and developmental disabilities often recommend guardianship, a responsibility with life-altering implications. 

But only approximately 30% of primary care residency programs in the United States provide training  on how to assess the ability of patients with disabilities to make decisions for themselves, and much of this training is optional, according to a recent study cited during a workshop at the 2024 annual meeting of the Society of General Internal Medicine.

Assessing the capacity of patients with disabilities involves navigating a maze of legal, ethical, and clinical considerations, according to Mary Thomas, MD, MPH, a clinical fellow in geriatrics at Yale University School of Medicine in New Haven, Connecticut, who co-moderated the workshop.

Guardianship, while sometimes necessary, can be overly restrictive and diminish patient autonomy, she said. The legal process — ultimately decided through the courts — gives a guardian permission to manage medical care and make decisions for someone who cannot make or communicate those decisions themselves.

Clinicians can assess patients through an evaluation of functional capacity, which allows them to observe a patient’s demeanor and administer a cognition test. Alternatives such as supported decision-making may be less restrictive and can better serve patients, she said. Supported decision-making allows for a person with disabilities to receive assistance from a supporter who can help a patient process medical conditions and treatment needs. The supporter helps empower capable patients to decide on their own.

Some states have introduced legislation that would legally recognize supported decision-making as a less restrictive alternative to guardianship or conservatorship, in which a court-appointed individual manages all aspects of a person’s life. 

Sara Mixter, MD, MPH, an assistant professor of medicine and pediatrics at the Johns Hopkins University School of Medicine in Baltimore and a co-moderator of the workshop, called the use of inclusive language in patient communication the “first step toward fostering an environment where patients feel respected and understood.”

Inclusive conversations can include person-first language and using words such as “caregiver” rather than “caretaker.” 

Dr. Thomas and Dr. Mixter also called for the directors of residency programs to provide more training on disabilities. They cited a 2023 survey of directors, many of whom said that educational boards do not require training in disability-specific care and that experts in the care of people with disabilities are few and far between.

“Education and awareness are key to overcoming the challenges we face,” Dr. Thomas said. “Improving our training programs means we can ensure that all patients receive the care and respect they deserve.”

Dr. Thomas and Dr. Mixter report no relevant disclosures.

A version of this article first appeared on Medscape.com.

BOSTON — Primary care clinicians caring for patients with intellectual and developmental disabilities often recommend guardianship, a responsibility with life-altering implications. 

But only approximately 30% of primary care residency programs in the United States provide training  on how to assess the ability of patients with disabilities to make decisions for themselves, and much of this training is optional, according to a recent study cited during a workshop at the 2024 annual meeting of the Society of General Internal Medicine.

Assessing the capacity of patients with disabilities involves navigating a maze of legal, ethical, and clinical considerations, according to Mary Thomas, MD, MPH, a clinical fellow in geriatrics at Yale University School of Medicine in New Haven, Connecticut, who co-moderated the workshop.

Guardianship, while sometimes necessary, can be overly restrictive and diminish patient autonomy, she said. The legal process — ultimately decided through the courts — gives a guardian permission to manage medical care and make decisions for someone who cannot make or communicate those decisions themselves.

Clinicians can assess patients through an evaluation of functional capacity, which allows them to observe a patient’s demeanor and administer a cognition test. Alternatives such as supported decision-making may be less restrictive and can better serve patients, she said. Supported decision-making allows for a person with disabilities to receive assistance from a supporter who can help a patient process medical conditions and treatment needs. The supporter helps empower capable patients to decide on their own.

Some states have introduced legislation that would legally recognize supported decision-making as a less restrictive alternative to guardianship or conservatorship, in which a court-appointed individual manages all aspects of a person’s life. 

Sara Mixter, MD, MPH, an assistant professor of medicine and pediatrics at the Johns Hopkins University School of Medicine in Baltimore and a co-moderator of the workshop, called the use of inclusive language in patient communication the “first step toward fostering an environment where patients feel respected and understood.”

Inclusive conversations can include person-first language and using words such as “caregiver” rather than “caretaker.” 

Dr. Thomas and Dr. Mixter also called for the directors of residency programs to provide more training on disabilities. They cited a 2023 survey of directors, many of whom said that educational boards do not require training in disability-specific care and that experts in the care of people with disabilities are few and far between.

“Education and awareness are key to overcoming the challenges we face,” Dr. Thomas said. “Improving our training programs means we can ensure that all patients receive the care and respect they deserve.”

Dr. Thomas and Dr. Mixter report no relevant disclosures.

A version of this article first appeared on Medscape.com.

BOSTON — Primary care clinicians caring for patients with intellectual and developmental disabilities often recommend guardianship, a responsibility with life-altering implications. 

But only approximately 30% of primary care residency programs in the United States provide training  on how to assess the ability of patients with disabilities to make decisions for themselves, and much of this training is optional, according to a recent study cited during a workshop at the 2024 annual meeting of the Society of General Internal Medicine.

Assessing the capacity of patients with disabilities involves navigating a maze of legal, ethical, and clinical considerations, according to Mary Thomas, MD, MPH, a clinical fellow in geriatrics at Yale University School of Medicine in New Haven, Connecticut, who co-moderated the workshop.

Guardianship, while sometimes necessary, can be overly restrictive and diminish patient autonomy, she said. The legal process — ultimately decided through the courts — gives a guardian permission to manage medical care and make decisions for someone who cannot make or communicate those decisions themselves.

Clinicians can assess patients through an evaluation of functional capacity, which allows them to observe a patient’s demeanor and administer a cognition test. Alternatives such as supported decision-making may be less restrictive and can better serve patients, she said. Supported decision-making allows for a person with disabilities to receive assistance from a supporter who can help a patient process medical conditions and treatment needs. The supporter helps empower capable patients to decide on their own.

Some states have introduced legislation that would legally recognize supported decision-making as a less restrictive alternative to guardianship or conservatorship, in which a court-appointed individual manages all aspects of a person’s life. 

Sara Mixter, MD, MPH, an assistant professor of medicine and pediatrics at the Johns Hopkins University School of Medicine in Baltimore and a co-moderator of the workshop, called the use of inclusive language in patient communication the “first step toward fostering an environment where patients feel respected and understood.”

Inclusive conversations can include person-first language and using words such as “caregiver” rather than “caretaker.” 

Dr. Thomas and Dr. Mixter also called for the directors of residency programs to provide more training on disabilities. They cited a 2023 survey of directors, many of whom said that educational boards do not require training in disability-specific care and that experts in the care of people with disabilities are few and far between.

“Education and awareness are key to overcoming the challenges we face,” Dr. Thomas said. “Improving our training programs means we can ensure that all patients receive the care and respect they deserve.”

Dr. Thomas and Dr. Mixter report no relevant disclosures.

A version of this article first appeared on Medscape.com.

A California jury has awarded $14 million to a former University of California, Los Angeles (UCLA) oncologist who claimed she was paid thousands less than her male colleagues and wrongfully terminated after her complaints of gender-based harassment and intimidation were ignored by program leadership.

The decision comes after a lengthy 8-year legal battle in which an appellate judge reversed a previous jury decision in her favor.

Lauren Pinter-Brown, MD, a hematologic oncologist, was hired in 2005 by the University of California, Los Angeles School of Medicine — now called UCLA’s David Geffen School of Medicine. As the school’s lymphoma program director, she conducted clinical research alongside other oncology doctors, including Sven de Vos, MD.

She claimed that her professional relationship with Dr. de Vos became contentious after he demonstrated “oppositional” and “disrespectful” behavior at team meetings, such as talking over her and turning his chair so Dr. Pinter-Brown faced his back. Court documents indicated that Dr. de Vos refused to use Dr. Pinter-Brown’s title in front of colleagues despite doing so for male counterparts.

Dr. Pinter-Brown argued that she was treated as the “butt of a joke” by Dr. de Vos and other male colleagues. In 2016, she sued Dr. de Vos, the university, and its governing body, the Board of Regents, for wrongful termination.

She was awarded a $13 million verdict in 2018. However, the California Court of Appeals overturned it in 2020 after concluding that several mistakes during the court proceedings impeded the school’s right to a fair and impartial trial. The case was retried, culminating in the even higher award of $14 million issued on May 9.

“Two juries have come to virtually identical findings showing multiple problems at UCLA involving gender discrimination,” Dr. Pinter-Brown’s attorney, Carney R. Shegerian, JD, told this news organization.

A spokesperson from UCLA’s David Geffen School of Medicine said administrators are carefully reviewing the new decision.

The spokesperson told this news organization that the medical school and its health system remain “deeply committed to maintaining a workplace free from discrimination, intimidation, retaliation, or harassment of any kind” and fostering a “respectful and inclusive environment ... in research, medical education, and patient care.”
 

Gender Pay Disparities Persist in Medicine

The gender pay gap in medicine is well documented. The 2024 Medscape Physician Compensation Report found that male doctors earn about 29% more than their female counterparts, with the disparity growing larger among specialists. In addition, a recent JAMA Health Forum study found that male physicians earned 21%-24% more per hour than female physicians.

Dr. Pinter-Brown, who now works at the University of California, Irvine, alleged that she was paid $200,000 less annually, on average, than her male colleagues.

That’s not surprising, says Martha Gulati, MD, professor and director of preventive cardiology at Cedars-Sinai Smidt Heart Institute, Los Angeles. She coauthored a commentary about gender disparities in JAMA Network Open. Dr. Gulati told this news organization that even a “small” pay disparity of $100,000 annually adds up.

“Let’s say the [male physician] invests it at 3% and adds to it yearly. Even without a raise, in 20 years, that is approximately $3 million,” Dr. Gulati explained. “Once you find out you are paid less than your male colleagues, you are upset. Your sense of value and self-worth disappears.”

Eileen Barrett, MD, MPH, president-elect of the American Medical Women’s Association, said that gender discrimination is likely more prevalent than research indicates. She told this news organization that self-doubt and fear of retaliation keep many from exposing the mistreatment.

Although more women are entering medicine, too few rise to the highest positions, Dr. Barrett said.

“Unfortunately, many are pulled and pushed into specialties and subspecialties that have lower compensation and are not promoted to leadership, so just having numbers isn’t enough to achieve equity,” Dr. Barrett said.

Dr. Pinter-Brown claimed she was repeatedly harassed and intimidated by Dr. de Vos from 2008 to 2015. Despite voicing concerns multiple times about the discriminatory behavior, the only resolutions offered by the male-dominated program leadership were for her to separate from the group and conduct lymphoma research independently or to avoid interacting with Dr. de Vos, court records said.

Even the school’s male Title IX officer, Jan Tillisch, MD, who handled gender-based discrimination complaints, reportedly made sexist comments. When Dr. Pinter-Brown sought his help, he allegedly told her that she had a reputation as an “angry woman” and “diva,” court records showed.

According to court documents, Dr. Pinter-Brown endured nitpicking and research audits as retaliation for speaking out, temporarily suspending her research privileges. She said she was subsequently removed from the director position and replaced by Dr. de Vos.

Female physicians who report discriminatory behavior often have unfavorable outcomes and risk future career prospects, Dr. Gulati said.

To shift this dynamic, she said institutions must increase transparency and practices that support female doctors receiving “equal pay for equal work.”
 

A version of this article appeared on Medscape.com.

A California jury has awarded $14 million to a former University of California, Los Angeles (UCLA) oncologist who claimed she was paid thousands less than her male colleagues and wrongfully terminated after her complaints of gender-based harassment and intimidation were ignored by program leadership.

The decision comes after a lengthy 8-year legal battle in which an appellate judge reversed a previous jury decision in her favor.

Lauren Pinter-Brown, MD, a hematologic oncologist, was hired in 2005 by the University of California, Los Angeles School of Medicine — now called UCLA’s David Geffen School of Medicine. As the school’s lymphoma program director, she conducted clinical research alongside other oncology doctors, including Sven de Vos, MD.

She claimed that her professional relationship with Dr. de Vos became contentious after he demonstrated “oppositional” and “disrespectful” behavior at team meetings, such as talking over her and turning his chair so Dr. Pinter-Brown faced his back. Court documents indicated that Dr. de Vos refused to use Dr. Pinter-Brown’s title in front of colleagues despite doing so for male counterparts.

Dr. Pinter-Brown argued that she was treated as the “butt of a joke” by Dr. de Vos and other male colleagues. In 2016, she sued Dr. de Vos, the university, and its governing body, the Board of Regents, for wrongful termination.

She was awarded a $13 million verdict in 2018. However, the California Court of Appeals overturned it in 2020 after concluding that several mistakes during the court proceedings impeded the school’s right to a fair and impartial trial. The case was retried, culminating in the even higher award of $14 million issued on May 9.

“Two juries have come to virtually identical findings showing multiple problems at UCLA involving gender discrimination,” Dr. Pinter-Brown’s attorney, Carney R. Shegerian, JD, told this news organization.

A spokesperson from UCLA’s David Geffen School of Medicine said administrators are carefully reviewing the new decision.

The spokesperson told this news organization that the medical school and its health system remain “deeply committed to maintaining a workplace free from discrimination, intimidation, retaliation, or harassment of any kind” and fostering a “respectful and inclusive environment ... in research, medical education, and patient care.”
 

Gender Pay Disparities Persist in Medicine

The gender pay gap in medicine is well documented. The 2024 Medscape Physician Compensation Report found that male doctors earn about 29% more than their female counterparts, with the disparity growing larger among specialists. In addition, a recent JAMA Health Forum study found that male physicians earned 21%-24% more per hour than female physicians.

Dr. Pinter-Brown, who now works at the University of California, Irvine, alleged that she was paid $200,000 less annually, on average, than her male colleagues.

That’s not surprising, says Martha Gulati, MD, professor and director of preventive cardiology at Cedars-Sinai Smidt Heart Institute, Los Angeles. She coauthored a commentary about gender disparities in JAMA Network Open. Dr. Gulati told this news organization that even a “small” pay disparity of $100,000 annually adds up.

“Let’s say the [male physician] invests it at 3% and adds to it yearly. Even without a raise, in 20 years, that is approximately $3 million,” Dr. Gulati explained. “Once you find out you are paid less than your male colleagues, you are upset. Your sense of value and self-worth disappears.”

Eileen Barrett, MD, MPH, president-elect of the American Medical Women’s Association, said that gender discrimination is likely more prevalent than research indicates. She told this news organization that self-doubt and fear of retaliation keep many from exposing the mistreatment.

Although more women are entering medicine, too few rise to the highest positions, Dr. Barrett said.

“Unfortunately, many are pulled and pushed into specialties and subspecialties that have lower compensation and are not promoted to leadership, so just having numbers isn’t enough to achieve equity,” Dr. Barrett said.

Dr. Pinter-Brown claimed she was repeatedly harassed and intimidated by Dr. de Vos from 2008 to 2015. Despite voicing concerns multiple times about the discriminatory behavior, the only resolutions offered by the male-dominated program leadership were for her to separate from the group and conduct lymphoma research independently or to avoid interacting with Dr. de Vos, court records said.

Even the school’s male Title IX officer, Jan Tillisch, MD, who handled gender-based discrimination complaints, reportedly made sexist comments. When Dr. Pinter-Brown sought his help, he allegedly told her that she had a reputation as an “angry woman” and “diva,” court records showed.

According to court documents, Dr. Pinter-Brown endured nitpicking and research audits as retaliation for speaking out, temporarily suspending her research privileges. She said she was subsequently removed from the director position and replaced by Dr. de Vos.

Female physicians who report discriminatory behavior often have unfavorable outcomes and risk future career prospects, Dr. Gulati said.

To shift this dynamic, she said institutions must increase transparency and practices that support female doctors receiving “equal pay for equal work.”
 

A version of this article appeared on Medscape.com.

A California jury has awarded $14 million to a former University of California, Los Angeles (UCLA) oncologist who claimed she was paid thousands less than her male colleagues and wrongfully terminated after her complaints of gender-based harassment and intimidation were ignored by program leadership.

The decision comes after a lengthy 8-year legal battle in which an appellate judge reversed a previous jury decision in her favor.

Lauren Pinter-Brown, MD, a hematologic oncologist, was hired in 2005 by the University of California, Los Angeles School of Medicine — now called UCLA’s David Geffen School of Medicine. As the school’s lymphoma program director, she conducted clinical research alongside other oncology doctors, including Sven de Vos, MD.

She claimed that her professional relationship with Dr. de Vos became contentious after he demonstrated “oppositional” and “disrespectful” behavior at team meetings, such as talking over her and turning his chair so Dr. Pinter-Brown faced his back. Court documents indicated that Dr. de Vos refused to use Dr. Pinter-Brown’s title in front of colleagues despite doing so for male counterparts.

Dr. Pinter-Brown argued that she was treated as the “butt of a joke” by Dr. de Vos and other male colleagues. In 2016, she sued Dr. de Vos, the university, and its governing body, the Board of Regents, for wrongful termination.

She was awarded a $13 million verdict in 2018. However, the California Court of Appeals overturned it in 2020 after concluding that several mistakes during the court proceedings impeded the school’s right to a fair and impartial trial. The case was retried, culminating in the even higher award of $14 million issued on May 9.

“Two juries have come to virtually identical findings showing multiple problems at UCLA involving gender discrimination,” Dr. Pinter-Brown’s attorney, Carney R. Shegerian, JD, told this news organization.

A spokesperson from UCLA’s David Geffen School of Medicine said administrators are carefully reviewing the new decision.

The spokesperson told this news organization that the medical school and its health system remain “deeply committed to maintaining a workplace free from discrimination, intimidation, retaliation, or harassment of any kind” and fostering a “respectful and inclusive environment ... in research, medical education, and patient care.”
 

Gender Pay Disparities Persist in Medicine

The gender pay gap in medicine is well documented. The 2024 Medscape Physician Compensation Report found that male doctors earn about 29% more than their female counterparts, with the disparity growing larger among specialists. In addition, a recent JAMA Health Forum study found that male physicians earned 21%-24% more per hour than female physicians.

Dr. Pinter-Brown, who now works at the University of California, Irvine, alleged that she was paid $200,000 less annually, on average, than her male colleagues.

That’s not surprising, says Martha Gulati, MD, professor and director of preventive cardiology at Cedars-Sinai Smidt Heart Institute, Los Angeles. She coauthored a commentary about gender disparities in JAMA Network Open. Dr. Gulati told this news organization that even a “small” pay disparity of $100,000 annually adds up.

“Let’s say the [male physician] invests it at 3% and adds to it yearly. Even without a raise, in 20 years, that is approximately $3 million,” Dr. Gulati explained. “Once you find out you are paid less than your male colleagues, you are upset. Your sense of value and self-worth disappears.”

Eileen Barrett, MD, MPH, president-elect of the American Medical Women’s Association, said that gender discrimination is likely more prevalent than research indicates. She told this news organization that self-doubt and fear of retaliation keep many from exposing the mistreatment.

Although more women are entering medicine, too few rise to the highest positions, Dr. Barrett said.

“Unfortunately, many are pulled and pushed into specialties and subspecialties that have lower compensation and are not promoted to leadership, so just having numbers isn’t enough to achieve equity,” Dr. Barrett said.

Dr. Pinter-Brown claimed she was repeatedly harassed and intimidated by Dr. de Vos from 2008 to 2015. Despite voicing concerns multiple times about the discriminatory behavior, the only resolutions offered by the male-dominated program leadership were for her to separate from the group and conduct lymphoma research independently or to avoid interacting with Dr. de Vos, court records said.

Even the school’s male Title IX officer, Jan Tillisch, MD, who handled gender-based discrimination complaints, reportedly made sexist comments. When Dr. Pinter-Brown sought his help, he allegedly told her that she had a reputation as an “angry woman” and “diva,” court records showed.

According to court documents, Dr. Pinter-Brown endured nitpicking and research audits as retaliation for speaking out, temporarily suspending her research privileges. She said she was subsequently removed from the director position and replaced by Dr. de Vos.

Female physicians who report discriminatory behavior often have unfavorable outcomes and risk future career prospects, Dr. Gulati said.

To shift this dynamic, she said institutions must increase transparency and practices that support female doctors receiving “equal pay for equal work.”
 

A version of this article appeared on Medscape.com.

Screenings may not be the way to get needed resources to children and their caregivers, according to new research presented at the annual meeting of the Pediatric Academic Societies (PAS).

Caregivers and parents who were asked if they wanted assistance in several areas of need, including transportation and childcare, were nearly twice as likely to say they wanted such help than those who received a screening on current hardships. Generally, each questionnaire is administered in front of their children in primary care or pediatric hospital settings.

“Families have a lot of concern about being seen a different way by their healthcare team, being seen as unfit, and having child protective services involved in their childcare for issues related to poverty,” said Danielle Cullen, MD, a pediatric emergency medicine specialist at Children’s Hospital of Philadelphia (CHOP) and assistant professor of pediatrics at the University of Pennsylvania in Philadelphia.

Dr. Cullen and her colleagues analyzed data from nearly 4000 caregivers of children up to age 21 at emergency departments or primary care clinics at CHOP between 2021 and 2023.

Caregivers were randomly assigned to one of three arms — screening with a version of WE CARE (Well Child Care, Evaluation, Community Resources, Advocacy, Referral, Education), use of an online menu of options for help in areas like housing, or neither approach.

Caregivers in all three arms received a map of resources and a follow-up text from a resource navigator to assist them as needed.

Nearly 40% of caregivers who presented with the digital menu said they wanted resources compared with 29% of those who were screened (P < .001). Non-native English speakers given the menu were 2.5 times more likely to say yes to resources compared with those who were screened.

“We need to be thoughtful about these mandates to screen for social determinants of health: It’s not that straightforward,” said Esther K. Chung, MD, a pediatrician and professor of pediatrics at the University of Washington Medicine in Seattle, who was not involved in the study. “What we’re getting from this study is that patients want choice, and the menu provides them choice.”

Dr. Cullen said the menu option allows caregivers to make choices based on their priorities and not on whether they meet the screening thresholds for need.

While some health clinics utilize tablet forms for screenings to offer more privacy with questions, asking direct questions about income, food insecurity, and housing stability can be stigmatizing, Dr. Cullen said.

“Screening positive for social risk doesn’t mean that you actually want resources, and on the flip side, the literature shows that about half of the people who screen negative want resources,” she said.

Dr. Cullen and her team also conducted follow-up interviews with caregivers and found many feared that their clinician would assume a medical condition was connected to living conditions. They also had concerns about insurance companies gaining access to the data and using it to deny coverage or raise costs.

Spanish-speaking caregivers cited fears about their immigration status, experiences of discrimination, and language barriers when trying to access resources.

Participants said a few key strategies could make screening less intimidating, such as abstaining from screening during a serious medical visit, asking for consent to record answers in medical records, and communicating in an empathetic manner.

“Some families are a bit surprised when we ask about things like housing and food insecurity, but I think as long as we contextualize it, we can minimize the stigma associated with it,” Dr. Chung said. “That takes quite a bit of nuance and skill.”

The study was funded by the William T. Grant Foundation and the Emergency Medicine Foundation. The authors reported no disclosures.

A version of this article appeared on Medscape.com.

Screenings may not be the way to get needed resources to children and their caregivers, according to new research presented at the annual meeting of the Pediatric Academic Societies (PAS).

Caregivers and parents who were asked if they wanted assistance in several areas of need, including transportation and childcare, were nearly twice as likely to say they wanted such help than those who received a screening on current hardships. Generally, each questionnaire is administered in front of their children in primary care or pediatric hospital settings.

“Families have a lot of concern about being seen a different way by their healthcare team, being seen as unfit, and having child protective services involved in their childcare for issues related to poverty,” said Danielle Cullen, MD, a pediatric emergency medicine specialist at Children’s Hospital of Philadelphia (CHOP) and assistant professor of pediatrics at the University of Pennsylvania in Philadelphia.

Dr. Cullen and her colleagues analyzed data from nearly 4000 caregivers of children up to age 21 at emergency departments or primary care clinics at CHOP between 2021 and 2023.

Caregivers were randomly assigned to one of three arms — screening with a version of WE CARE (Well Child Care, Evaluation, Community Resources, Advocacy, Referral, Education), use of an online menu of options for help in areas like housing, or neither approach.

Caregivers in all three arms received a map of resources and a follow-up text from a resource navigator to assist them as needed.

Nearly 40% of caregivers who presented with the digital menu said they wanted resources compared with 29% of those who were screened (P < .001). Non-native English speakers given the menu were 2.5 times more likely to say yes to resources compared with those who were screened.

“We need to be thoughtful about these mandates to screen for social determinants of health: It’s not that straightforward,” said Esther K. Chung, MD, a pediatrician and professor of pediatrics at the University of Washington Medicine in Seattle, who was not involved in the study. “What we’re getting from this study is that patients want choice, and the menu provides them choice.”

Dr. Cullen said the menu option allows caregivers to make choices based on their priorities and not on whether they meet the screening thresholds for need.

While some health clinics utilize tablet forms for screenings to offer more privacy with questions, asking direct questions about income, food insecurity, and housing stability can be stigmatizing, Dr. Cullen said.

“Screening positive for social risk doesn’t mean that you actually want resources, and on the flip side, the literature shows that about half of the people who screen negative want resources,” she said.

Dr. Cullen and her team also conducted follow-up interviews with caregivers and found many feared that their clinician would assume a medical condition was connected to living conditions. They also had concerns about insurance companies gaining access to the data and using it to deny coverage or raise costs.

Spanish-speaking caregivers cited fears about their immigration status, experiences of discrimination, and language barriers when trying to access resources.

Participants said a few key strategies could make screening less intimidating, such as abstaining from screening during a serious medical visit, asking for consent to record answers in medical records, and communicating in an empathetic manner.

“Some families are a bit surprised when we ask about things like housing and food insecurity, but I think as long as we contextualize it, we can minimize the stigma associated with it,” Dr. Chung said. “That takes quite a bit of nuance and skill.”

The study was funded by the William T. Grant Foundation and the Emergency Medicine Foundation. The authors reported no disclosures.

A version of this article appeared on Medscape.com.

Screenings may not be the way to get needed resources to children and their caregivers, according to new research presented at the annual meeting of the Pediatric Academic Societies (PAS).

Caregivers and parents who were asked if they wanted assistance in several areas of need, including transportation and childcare, were nearly twice as likely to say they wanted such help than those who received a screening on current hardships. Generally, each questionnaire is administered in front of their children in primary care or pediatric hospital settings.

“Families have a lot of concern about being seen a different way by their healthcare team, being seen as unfit, and having child protective services involved in their childcare for issues related to poverty,” said Danielle Cullen, MD, a pediatric emergency medicine specialist at Children’s Hospital of Philadelphia (CHOP) and assistant professor of pediatrics at the University of Pennsylvania in Philadelphia.

Dr. Cullen and her colleagues analyzed data from nearly 4000 caregivers of children up to age 21 at emergency departments or primary care clinics at CHOP between 2021 and 2023.

Caregivers were randomly assigned to one of three arms — screening with a version of WE CARE (Well Child Care, Evaluation, Community Resources, Advocacy, Referral, Education), use of an online menu of options for help in areas like housing, or neither approach.

Caregivers in all three arms received a map of resources and a follow-up text from a resource navigator to assist them as needed.

Nearly 40% of caregivers who presented with the digital menu said they wanted resources compared with 29% of those who were screened (P < .001). Non-native English speakers given the menu were 2.5 times more likely to say yes to resources compared with those who were screened.

“We need to be thoughtful about these mandates to screen for social determinants of health: It’s not that straightforward,” said Esther K. Chung, MD, a pediatrician and professor of pediatrics at the University of Washington Medicine in Seattle, who was not involved in the study. “What we’re getting from this study is that patients want choice, and the menu provides them choice.”

Dr. Cullen said the menu option allows caregivers to make choices based on their priorities and not on whether they meet the screening thresholds for need.

While some health clinics utilize tablet forms for screenings to offer more privacy with questions, asking direct questions about income, food insecurity, and housing stability can be stigmatizing, Dr. Cullen said.

“Screening positive for social risk doesn’t mean that you actually want resources, and on the flip side, the literature shows that about half of the people who screen negative want resources,” she said.

Dr. Cullen and her team also conducted follow-up interviews with caregivers and found many feared that their clinician would assume a medical condition was connected to living conditions. They also had concerns about insurance companies gaining access to the data and using it to deny coverage or raise costs.

Spanish-speaking caregivers cited fears about their immigration status, experiences of discrimination, and language barriers when trying to access resources.

Participants said a few key strategies could make screening less intimidating, such as abstaining from screening during a serious medical visit, asking for consent to record answers in medical records, and communicating in an empathetic manner.

“Some families are a bit surprised when we ask about things like housing and food insecurity, but I think as long as we contextualize it, we can minimize the stigma associated with it,” Dr. Chung said. “That takes quite a bit of nuance and skill.”

The study was funded by the William T. Grant Foundation and the Emergency Medicine Foundation. The authors reported no disclosures.

A version of this article appeared on Medscape.com.

The risk for developing skin cancer can be somewhat attributed to variations in skin pigmentation. Historically, lighter skin pigmentation has been observed in populations living in higher latitudes and darker pigmentation in populations near the equator. Although skin pigmentation is a conglomeration of genetic and environmental factors, anthropologic studies have demonstrated an association of human skin lightening with historic human migratory patterns.¹ It is postulated that migration to latitudes with less UVB light penetration has resulted in a compensatory natural selection of lighter skin types. Furthermore, the driving force behind this migration-associated skin lightening has remained unclear.¹

The need for folate metabolism, vitamin D synthesis, and barrier protection, as well as cultural practices, has been postulated as driving factors for skin pigmentation variation. Synthesis of vitamin D is a UV radiation (UVR)–dependent process and has remained a prominent theoretical driver for the basis of evolutionary skin lightening. Vitamin D can be acquired both exogenously or endogenously via dietary supplementation or sunlight; however, historically it has been obtained through UVB exposure primarily. Once UVB is absorbed by the skin, it catalyzes conversion of 7-dehydrocholesterol to previtamin D₃, which is converted to vitamin D in the kidneys.^2,3 It is suggested that lighter skin tones have an advantage over darker skin tones in synthesizing vitamin D at higher latitudes where there is less UVB, thus leading to the adaptation process.1 In this systematic review, we analyzed the evolutionary vitamin D adaptation hypothesis and assessed the validity of evidence supporting this theory in the literature.

Methods

A search of PubMed, Embase, and the Cochrane Reviews database was conducted using the terms evolution, vitamin D, and skin to generate articles published from 2010 to 2022 that evaluated the influence of UVR-dependent production of vitamin D on skin pigmentation through historical migration patterns (Figure). Studies were excluded during an initial screening of abstracts followed by full-text assessment if they only had abstracts and if articles were inaccessible for review or in the form of case reports and commentaries.

The following data were extracted from each included study: reference citation, affiliated institutions of authors, author specialties, journal name, year of publication, study period, type of article, type of study, mechanism of adaptation, data concluding or supporting vitamin D as the driver, and data concluding or suggesting against vitamin D as the driver. Data concluding or supporting vitamin D as the driver were recorded from statistically significant results, study conclusions, and direct quotations. Data concluding or suggesting against vitamin D as the driver also were recorded from significant results, study conclusions, and direct quotes. The mechanism of adaptation was based on vitamin D synthesis modulation, melanin upregulation, genetic selections, genetic drift, mating patterns, increased vitamin D sensitivity, interbreeding, and diet.

Studies included in the analysis were placed into 1 of 3 categories: supporting, neutral, and against. Strength of Recommendation Taxonomy (SORT) criteria were used to classify the level of evidence of each article.⁴ Each article’s level of evidence was then graded (Table 1). The SORT grading levels were based on quality and evidence type: level 1 signified good-quality, patient-oriented evidence; level 2 signified limited-quality, patient-oriented evidence; and level 3 signified other evidence.⁴

Results

Article Selection—A total of 229 articles were identified for screening, and 39 studies met inclusion criteria.^1-3,5-40 Systematic and retrospective reviews were the most common types of studies. Genomic analysis/sequencing/genome-wide association studies (GWAS) were the most common methods of analysis. Of these 39 articles, 26 were classified as supporting the evolutionary vitamin D adaptation hypothesis, 10 were classified as neutral, and 3 were classified as against (Table 1). 

Of the articles classified as supporting the vitamin D hypothesis, 13 articles were level 1 evidence, 9 were level 2, and 4 were level 3. Key findings supporting the vitamin D hypothesis included genetic natural selection favoring vitamin D synthesis genes at higher latitudes with lower UVR and the skin lightening that occurred to protect against vitamin D deficiency (Table 1). Specific genes supporting these findings included 7-dehydrocholesterol reductase (DHCR7), vitamin D receptor (VDR), tyrosinase (TYR), tyrosinase-related protein 1 (TYRP1), oculocutaneous albinism type 2 melanosomal transmembrane protein (OCA2), solute carrier family 45 member 2 (SLC45A2), solute carrier family 4 member 5 (SLC24A5), Kit ligand (KITLG), melanocortin 1 receptor (MC1R), and HECT and RLD domain containing E3 ubiquitin protein ligase 2 (HERC2)(Table 2).

uolaslecluveclojibratigudrojimashedespehafrefregicubrivedesofrispeswajoswavatrulostikuspabroshiboswonewrusharuwrusokustetuchauokuuepavawrowrephikakideswijugidrupijechawatorophufruvecegonibroraprubestidramusp

Comment

The importance of appropriate vitamin D levels is hypothesized as a potent driver in skin lightening because the vitamin is essential for many biochemical processes within the human body. Proper calcification of bones requires activated vitamin D to prevent rickets in childhood. Pelvic deformation in women with rickets can obstruct childbirth in primitive medical environments.¹⁵ This direct reproductive impairment suggests a strong selective pressure for skin lightening in populations that migrated northward to enhance vitamin D synthesis. 

Of the 39 articles that we reviewed, the majority (n=26 [66.7%]) supported the hypothesis that vitamin D synthesis was the main driver behind skin lightening, whereas 3 (7.7%) did not support the hypothesis and 10 (25.6%) were neutral. Other leading theories explaining skin lightening included the idea that enhanced melanogenesis protected against folate degradation; genetic selection for light-skin alleles due to genetic drift; skin lightening being the result of sexual selection; and a combination of factors, including dietary choices, clothing preferences, and skin permeability barriers. 

Articles With Supporting Evidence for the Vitamin D Theory—As Homo sapiens migrated out of Africa, migration patterns demonstrated the correlation between distance from the equator and skin pigmentation from natural selection. Individuals with darker skin pigment required higher levels of UVR to synthesize vitamin D. According to Beleza et al,1 as humans migrated to areas of higher latitudes with lower levels of UVR, natural selection favored the development of lighter skin to maximize vitamin D production. Vitamin D is linked to calcium metabolism, and its deficiency can lead to bone malformations and poor immune function.³⁵ Several genes affecting melanogenesis and skin pigment have been found to have geospatial patterns that map to different geographic locations of various populations, indicating how human migration patterns out of Africa created this natural selection for skin lightening. The gene KITLG—associated with lighter skin pigmentation—has been found in high frequencies in both European and East Asian populations and is proposed to have increased in frequency after the migration out of Africa. However, the genes TYRP1, SLC24A5, and SLC45A2 were found at high frequencies only in European populations, and this selection occurred 11,000 to 19,000 years ago during the Last Glacial Maximum (15,000–20,000 years ago), demonstrating the selection for European over East Asian characteristics. During this period, seasonal changes increased the risk for vitamin D deficiency and provided an urgency for selection to a lighter skin pigment.¹

The migration of H sapiens to northern latitudes prompted the selection of alleles that would increasevitamin D synthesis to counteract the reduced UV exposure. Genetic analysis studies have found key associations between genes encoding for the metabolism of vitamin D and pigmentation. Among this complex network are the essential downstream enzymes in the melanocortin receptor 1 pathway, including TYR and TYRP1. Forty-six of 960 single-nucleotide polymorphisms located in 29 different genes involved in skin pigmentation that were analyzed in a cohort of 2970 individuals were significantly associated with serum vitamin D levels (P<.05). The exocyst complex component 2 (EXOC2), TYR, and TYRP1 gene variants were shown to have the greatest influence on vitamin D status.⁹ These data reveal how pigment genotypes are predictive of vitamin D levels and the epistatic potential among many genes in this complex network. 

Gene variation plays an important role in vitamin D status when comparing genetic polymorphisms in populations in northern latitudes to African populations. Vitamin D₃ precursor availability is decreased by 7-DHCR catalyzing the precursors substrate to cholesterol. In a study using GWAS, it was found that “variations in DHCR7 may aid vitamin D production by conserving cutaneous 7-DHC levels. A high prevalence of DHCR7 variants were found in European and Northeast Asian populations but not in African populations, suggesting that selection occurred for these DHCR7 mutations in populations who migrated to more northern latitudes.⁵ Multilocus networks have been established between the VDR promotor and skin color genes (Table 2) that exhibit a strong in-Africa vs out-of-Africa frequency pattern. It also has been shown that genetic variation (suggesting a long-term evolutionary inclination) and epigenetic modification (indicative of short-term exposure) of VDR lends support to the vitamin D hypothesis. As latitude decreases, prevalence of VDR FokI (F allele), BsmI (B allele), ApaI (A allele), and TaqI (T allele) also decreases in a linear manner, linking latitude to VDR polymorphisms. Plasma vitamin D levels and photoperiod of conception—UV exposure during the periconceptional period—also were extrapolative of VDR methylation in a study involving 80 participants, where these 2 factors accounted for 17% of variance in methylation.⁶

vephachiprobetrelisutruspishouishophipiphucluchegobesodroswodrasluchachukoprotecishustephocherotropruhiphigechacauojobrephufraswawracheslewechiwrispuspebelidrephegabrithuphoruphathaceboliw

wrehoswojospiswodenabrudephedorimuhedaciuihu

Other noteworthy genes included HERC2, which has implications in the expression of OCA2 (melanocyte-specific transporter protein), and IRF4, which encodes for an important enzyme in folate-dependent melanin production. In an Australian cross-sectional study that analyzed vitamin D and pigmentation gene polymorphisms in conjunction with plasma vitamin D levels, the most notable rate of vitamin D loss occurred in individuals with the darkest pigmentation HERC2 (AA) genotype.³¹ In contrast, the lightest pigmentation HERC2 (GG) genotypes had increased vitamin D₃ photosynthesis. Interestingly, the lightest interferon regulatory factor 4 (IRF4) TT genotype and the darkest HERC2 AA genotype, rendering the greatest folate loss and largest synthesis of vitamin D₃, were not seen in combination in any of the participants.³⁰ In addition to HERC2, derived alleles from pigment-associated genes SLC24A5*A and SLC45A2*G demonstrated greater frequencies in Europeans (>90%) compared to Africans and East Asians, where the allelic frequencies were either rare or absent.1 This evidence delineates not only the complexity but also the strong relationship between skin pigmentation, latitude, and vitamin D status. The GWAS also have supported this concept. In comparing European populations to African populations, there was a 4-fold increase in the frequencies of “derived alleles of the vitamin D transport protein (GC, rs3755967), the 25(OH)D₃ synthesizing enzyme (CYP2R1, rs10741657), VDR (rs2228570 (commonly known as FokI polymorphism), rs1544410 (Bsm1), and rs731236 (Taq1) and the VDR target genes CYP24A1 (rs17216707), CD14 (rs2569190), and CARD9 (rs4077515).”³²

Articles With Evidence Against the Vitamin D Theory—This review analyzed the level of support for the theory that vitamin D was the main driver for skin lightening. Although most articles supported this theory, there were articles that listed other plausible counterarguments. Jablonski and Chaplin3 suggested that humans living in higher latitudes compensated for increased demand of vitamin D by placing cultural importance on a diet of vitamin D–rich foods and thus would not have experienced decreased vitamin D levels, which we hypothesize were the driver for skin lightening. Elias et al³⁹ argued that initial pigment dilution may have instead served to improve metabolic conservation, as the authors found no evidence of rickets—the sequelae of vitamin D deficiency—in pre–industrial age human fossils. Elias and Williams3⁸ proposed that differences in skin pigment are due to a more intact skin permeability barrier as “a requirement for life in a desiccating terrestrial environment,” which is seen in darker skin tones compared to lighter skin tones and thus can survive better in warmer climates with less risk of infections or dehydration.

Articles With Neutral Evidence for the Vitamin D Theory—Greaves⁴¹ argued against the idea that skin evolved to become lighter to protect against vitamin D deficiency. They proposed that the chimpanzee, which is the human’s most closely related species, had light skin covered by hair, and the loss of this hair led to exposed pale skin that created a need for increased melanin production for protection from UVR. Greaves⁴¹ stated that the MC1R gene (associated with darker pigmentation) was selected for in African populations, and those with pale skin retained their original pigment as they migrated to higher latitudes. Further research has demonstrated that the genetic natural selection for skin pigment is a complex process that involves multiple gene variants found throughout cultures across the globe.

sobrochugiphipro

Conclusion

Skin pigmentation has continuously evolved alongside humans. Genetic selection for lighter skin coincides with a favorable selection for genes involved in vitamin D synthesis as humans migrated to northern latitudes, which enabled humans to produce adequate levels of exogenous vitamin D in low-UVR areas and in turn promoted survival. Early humans without access to supplementation or foods rich in vitamin D acquired vitamin D primarily through sunlight. In comparison to modern society, where vitamin D supplementation is accessible and human lifespans are prolonged, lighter skin tone is now a risk factor for malignant cancers of the skin rather than being a protective adaptation. Current sun behavior recommendations conclude that the body’s need for vitamin D is satisfied by UV exposure to the arms, legs, hands, and/or face for only 5 to 30 minutes between 10 am and 4 pm daily without sunscreen.^42-44 Approximately 600 IU of vitamin D supplementation daily is recommended in a typical adult younger than 70 years to avoid deficiency. In adults 70 years and older who are not receiving adequate sunlight exposure, 800 IU of daily vitamin D supplementation is recommended.⁴⁵

The hypothesis that skin lightening primarily was driven by the need for vitamin D can only be partially supported by our review. Studies have shown that there is a corresponding complex network of genes that determines skin pigmentation as well as vitamin D synthesis and conservation. However, there is sufficient evidence that skin lightening is multifactorial in nature, and vitamin D alone may not be the sole driver. The information in this review can be used by health care providers to educate patients on sun protection, given the lesser threat of severe vitamin D deficiency in developed communities today that have access to adequate nutrition and supplementation.

Skin lightening and its coinciding evolutionary drivers are a rather neglected area of research. Due to heterogeneous cohorts and conservative data analysis, GWAS studies run the risk of type II error, yielding a limitation in our data analysis.⁹ Furthermore, the data regarding specific time frames in evolutionary skin lightening as well as the intensity of gene polymorphisms are limited.1 Further studies are needed to determine the interconnectedness of the current skin-lightening theories to identify other important factors that may play a role in the process. Determining the key event can help us better understand skin-adaptation mechanisms and create a framework for understanding the vital process involved in adaptation, survival, and disease manifestation in different patient populations.

The risk for developing skin cancer can be somewhat attributed to variations in skin pigmentation. Historically, lighter skin pigmentation has been observed in populations living in higher latitudes and darker pigmentation in populations near the equator. Although skin pigmentation is a conglomeration of genetic and environmental factors, anthropologic studies have demonstrated an association of human skin lightening with historic human migratory patterns.¹ It is postulated that migration to latitudes with less UVB light penetration has resulted in a compensatory natural selection of lighter skin types. Furthermore, the driving force behind this migration-associated skin lightening has remained unclear.¹

The need for folate metabolism, vitamin D synthesis, and barrier protection, as well as cultural practices, has been postulated as driving factors for skin pigmentation variation. Synthesis of vitamin D is a UV radiation (UVR)–dependent process and has remained a prominent theoretical driver for the basis of evolutionary skin lightening. Vitamin D can be acquired both exogenously or endogenously via dietary supplementation or sunlight; however, historically it has been obtained through UVB exposure primarily. Once UVB is absorbed by the skin, it catalyzes conversion of 7-dehydrocholesterol to previtamin D₃, which is converted to vitamin D in the kidneys.^2,3 It is suggested that lighter skin tones have an advantage over darker skin tones in synthesizing vitamin D at higher latitudes where there is less UVB, thus leading to the adaptation process.1 In this systematic review, we analyzed the evolutionary vitamin D adaptation hypothesis and assessed the validity of evidence supporting this theory in the literature.

Methods

A search of PubMed, Embase, and the Cochrane Reviews database was conducted using the terms evolution, vitamin D, and skin to generate articles published from 2010 to 2022 that evaluated the influence of UVR-dependent production of vitamin D on skin pigmentation through historical migration patterns (Figure). Studies were excluded during an initial screening of abstracts followed by full-text assessment if they only had abstracts and if articles were inaccessible for review or in the form of case reports and commentaries.

The following data were extracted from each included study: reference citation, affiliated institutions of authors, author specialties, journal name, year of publication, study period, type of article, type of study, mechanism of adaptation, data concluding or supporting vitamin D as the driver, and data concluding or suggesting against vitamin D as the driver. Data concluding or supporting vitamin D as the driver were recorded from statistically significant results, study conclusions, and direct quotations. Data concluding or suggesting against vitamin D as the driver also were recorded from significant results, study conclusions, and direct quotes. The mechanism of adaptation was based on vitamin D synthesis modulation, melanin upregulation, genetic selections, genetic drift, mating patterns, increased vitamin D sensitivity, interbreeding, and diet.

Studies included in the analysis were placed into 1 of 3 categories: supporting, neutral, and against. Strength of Recommendation Taxonomy (SORT) criteria were used to classify the level of evidence of each article.⁴ Each article’s level of evidence was then graded (Table 1). The SORT grading levels were based on quality and evidence type: level 1 signified good-quality, patient-oriented evidence; level 2 signified limited-quality, patient-oriented evidence; and level 3 signified other evidence.⁴

Results

Article Selection—A total of 229 articles were identified for screening, and 39 studies met inclusion criteria.^1-3,5-40 Systematic and retrospective reviews were the most common types of studies. Genomic analysis/sequencing/genome-wide association studies (GWAS) were the most common methods of analysis. Of these 39 articles, 26 were classified as supporting the evolutionary vitamin D adaptation hypothesis, 10 were classified as neutral, and 3 were classified as against (Table 1). 

Of the articles classified as supporting the vitamin D hypothesis, 13 articles were level 1 evidence, 9 were level 2, and 4 were level 3. Key findings supporting the vitamin D hypothesis included genetic natural selection favoring vitamin D synthesis genes at higher latitudes with lower UVR and the skin lightening that occurred to protect against vitamin D deficiency (Table 1). Specific genes supporting these findings included 7-dehydrocholesterol reductase (DHCR7), vitamin D receptor (VDR), tyrosinase (TYR), tyrosinase-related protein 1 (TYRP1), oculocutaneous albinism type 2 melanosomal transmembrane protein (OCA2), solute carrier family 45 member 2 (SLC45A2), solute carrier family 4 member 5 (SLC24A5), Kit ligand (KITLG), melanocortin 1 receptor (MC1R), and HECT and RLD domain containing E3 ubiquitin protein ligase 2 (HERC2)(Table 2).

uolaslecluveclojibratigudrojimashedespehafrefregicubrivedesofrispeswajoswavatrulostikuspabroshiboswonewrusharuwrusokustetuchauokuuepavawrowrephikakideswijugidrupijechawatorophufruvecegonibroraprubestidramusp

Comment

The importance of appropriate vitamin D levels is hypothesized as a potent driver in skin lightening because the vitamin is essential for many biochemical processes within the human body. Proper calcification of bones requires activated vitamin D to prevent rickets in childhood. Pelvic deformation in women with rickets can obstruct childbirth in primitive medical environments.¹⁵ This direct reproductive impairment suggests a strong selective pressure for skin lightening in populations that migrated northward to enhance vitamin D synthesis. 

Of the 39 articles that we reviewed, the majority (n=26 [66.7%]) supported the hypothesis that vitamin D synthesis was the main driver behind skin lightening, whereas 3 (7.7%) did not support the hypothesis and 10 (25.6%) were neutral. Other leading theories explaining skin lightening included the idea that enhanced melanogenesis protected against folate degradation; genetic selection for light-skin alleles due to genetic drift; skin lightening being the result of sexual selection; and a combination of factors, including dietary choices, clothing preferences, and skin permeability barriers. 

Articles With Supporting Evidence for the Vitamin D Theory—As Homo sapiens migrated out of Africa, migration patterns demonstrated the correlation between distance from the equator and skin pigmentation from natural selection. Individuals with darker skin pigment required higher levels of UVR to synthesize vitamin D. According to Beleza et al,1 as humans migrated to areas of higher latitudes with lower levels of UVR, natural selection favored the development of lighter skin to maximize vitamin D production. Vitamin D is linked to calcium metabolism, and its deficiency can lead to bone malformations and poor immune function.³⁵ Several genes affecting melanogenesis and skin pigment have been found to have geospatial patterns that map to different geographic locations of various populations, indicating how human migration patterns out of Africa created this natural selection for skin lightening. The gene KITLG—associated with lighter skin pigmentation—has been found in high frequencies in both European and East Asian populations and is proposed to have increased in frequency after the migration out of Africa. However, the genes TYRP1, SLC24A5, and SLC45A2 were found at high frequencies only in European populations, and this selection occurred 11,000 to 19,000 years ago during the Last Glacial Maximum (15,000–20,000 years ago), demonstrating the selection for European over East Asian characteristics. During this period, seasonal changes increased the risk for vitamin D deficiency and provided an urgency for selection to a lighter skin pigment.¹

The migration of H sapiens to northern latitudes prompted the selection of alleles that would increasevitamin D synthesis to counteract the reduced UV exposure. Genetic analysis studies have found key associations between genes encoding for the metabolism of vitamin D and pigmentation. Among this complex network are the essential downstream enzymes in the melanocortin receptor 1 pathway, including TYR and TYRP1. Forty-six of 960 single-nucleotide polymorphisms located in 29 different genes involved in skin pigmentation that were analyzed in a cohort of 2970 individuals were significantly associated with serum vitamin D levels (P<.05). The exocyst complex component 2 (EXOC2), TYR, and TYRP1 gene variants were shown to have the greatest influence on vitamin D status.⁹ These data reveal how pigment genotypes are predictive of vitamin D levels and the epistatic potential among many genes in this complex network. 

Gene variation plays an important role in vitamin D status when comparing genetic polymorphisms in populations in northern latitudes to African populations. Vitamin D₃ precursor availability is decreased by 7-DHCR catalyzing the precursors substrate to cholesterol. In a study using GWAS, it was found that “variations in DHCR7 may aid vitamin D production by conserving cutaneous 7-DHC levels. A high prevalence of DHCR7 variants were found in European and Northeast Asian populations but not in African populations, suggesting that selection occurred for these DHCR7 mutations in populations who migrated to more northern latitudes.⁵ Multilocus networks have been established between the VDR promotor and skin color genes (Table 2) that exhibit a strong in-Africa vs out-of-Africa frequency pattern. It also has been shown that genetic variation (suggesting a long-term evolutionary inclination) and epigenetic modification (indicative of short-term exposure) of VDR lends support to the vitamin D hypothesis. As latitude decreases, prevalence of VDR FokI (F allele), BsmI (B allele), ApaI (A allele), and TaqI (T allele) also decreases in a linear manner, linking latitude to VDR polymorphisms. Plasma vitamin D levels and photoperiod of conception—UV exposure during the periconceptional period—also were extrapolative of VDR methylation in a study involving 80 participants, where these 2 factors accounted for 17% of variance in methylation.⁶

vephachiprobetrelisutruspishouishophipiphucluchegobesodroswodrasluchachukoprotecishustephocherotropruhiphigechacauojobrephufraswawracheslewechiwrispuspebelidrephegabrithuphoruphathaceboliw

wrehoswojospiswodenabrudephedorimuhedaciuihu

Other noteworthy genes included HERC2, which has implications in the expression of OCA2 (melanocyte-specific transporter protein), and IRF4, which encodes for an important enzyme in folate-dependent melanin production. In an Australian cross-sectional study that analyzed vitamin D and pigmentation gene polymorphisms in conjunction with plasma vitamin D levels, the most notable rate of vitamin D loss occurred in individuals with the darkest pigmentation HERC2 (AA) genotype.³¹ In contrast, the lightest pigmentation HERC2 (GG) genotypes had increased vitamin D₃ photosynthesis. Interestingly, the lightest interferon regulatory factor 4 (IRF4) TT genotype and the darkest HERC2 AA genotype, rendering the greatest folate loss and largest synthesis of vitamin D₃, were not seen in combination in any of the participants.³⁰ In addition to HERC2, derived alleles from pigment-associated genes SLC24A5*A and SLC45A2*G demonstrated greater frequencies in Europeans (>90%) compared to Africans and East Asians, where the allelic frequencies were either rare or absent.1 This evidence delineates not only the complexity but also the strong relationship between skin pigmentation, latitude, and vitamin D status. The GWAS also have supported this concept. In comparing European populations to African populations, there was a 4-fold increase in the frequencies of “derived alleles of the vitamin D transport protein (GC, rs3755967), the 25(OH)D₃ synthesizing enzyme (CYP2R1, rs10741657), VDR (rs2228570 (commonly known as FokI polymorphism), rs1544410 (Bsm1), and rs731236 (Taq1) and the VDR target genes CYP24A1 (rs17216707), CD14 (rs2569190), and CARD9 (rs4077515).”³²

Articles With Evidence Against the Vitamin D Theory—This review analyzed the level of support for the theory that vitamin D was the main driver for skin lightening. Although most articles supported this theory, there were articles that listed other plausible counterarguments. Jablonski and Chaplin3 suggested that humans living in higher latitudes compensated for increased demand of vitamin D by placing cultural importance on a diet of vitamin D–rich foods and thus would not have experienced decreased vitamin D levels, which we hypothesize were the driver for skin lightening. Elias et al³⁹ argued that initial pigment dilution may have instead served to improve metabolic conservation, as the authors found no evidence of rickets—the sequelae of vitamin D deficiency—in pre–industrial age human fossils. Elias and Williams3⁸ proposed that differences in skin pigment are due to a more intact skin permeability barrier as “a requirement for life in a desiccating terrestrial environment,” which is seen in darker skin tones compared to lighter skin tones and thus can survive better in warmer climates with less risk of infections or dehydration.

Articles With Neutral Evidence for the Vitamin D Theory—Greaves⁴¹ argued against the idea that skin evolved to become lighter to protect against vitamin D deficiency. They proposed that the chimpanzee, which is the human’s most closely related species, had light skin covered by hair, and the loss of this hair led to exposed pale skin that created a need for increased melanin production for protection from UVR. Greaves⁴¹ stated that the MC1R gene (associated with darker pigmentation) was selected for in African populations, and those with pale skin retained their original pigment as they migrated to higher latitudes. Further research has demonstrated that the genetic natural selection for skin pigment is a complex process that involves multiple gene variants found throughout cultures across the globe.

sobrochugiphipro

Conclusion

Skin pigmentation has continuously evolved alongside humans. Genetic selection for lighter skin coincides with a favorable selection for genes involved in vitamin D synthesis as humans migrated to northern latitudes, which enabled humans to produce adequate levels of exogenous vitamin D in low-UVR areas and in turn promoted survival. Early humans without access to supplementation or foods rich in vitamin D acquired vitamin D primarily through sunlight. In comparison to modern society, where vitamin D supplementation is accessible and human lifespans are prolonged, lighter skin tone is now a risk factor for malignant cancers of the skin rather than being a protective adaptation. Current sun behavior recommendations conclude that the body’s need for vitamin D is satisfied by UV exposure to the arms, legs, hands, and/or face for only 5 to 30 minutes between 10 am and 4 pm daily without sunscreen.^42-44 Approximately 600 IU of vitamin D supplementation daily is recommended in a typical adult younger than 70 years to avoid deficiency. In adults 70 years and older who are not receiving adequate sunlight exposure, 800 IU of daily vitamin D supplementation is recommended.⁴⁵

The hypothesis that skin lightening primarily was driven by the need for vitamin D can only be partially supported by our review. Studies have shown that there is a corresponding complex network of genes that determines skin pigmentation as well as vitamin D synthesis and conservation. However, there is sufficient evidence that skin lightening is multifactorial in nature, and vitamin D alone may not be the sole driver. The information in this review can be used by health care providers to educate patients on sun protection, given the lesser threat of severe vitamin D deficiency in developed communities today that have access to adequate nutrition and supplementation.

Skin lightening and its coinciding evolutionary drivers are a rather neglected area of research. Due to heterogeneous cohorts and conservative data analysis, GWAS studies run the risk of type II error, yielding a limitation in our data analysis.⁹ Furthermore, the data regarding specific time frames in evolutionary skin lightening as well as the intensity of gene polymorphisms are limited.1 Further studies are needed to determine the interconnectedness of the current skin-lightening theories to identify other important factors that may play a role in the process. Determining the key event can help us better understand skin-adaptation mechanisms and create a framework for understanding the vital process involved in adaptation, survival, and disease manifestation in different patient populations.

The risk for developing skin cancer can be somewhat attributed to variations in skin pigmentation. Historically, lighter skin pigmentation has been observed in populations living in higher latitudes and darker pigmentation in populations near the equator. Although skin pigmentation is a conglomeration of genetic and environmental factors, anthropologic studies have demonstrated an association of human skin lightening with historic human migratory patterns.¹ It is postulated that migration to latitudes with less UVB light penetration has resulted in a compensatory natural selection of lighter skin types. Furthermore, the driving force behind this migration-associated skin lightening has remained unclear.¹

The need for folate metabolism, vitamin D synthesis, and barrier protection, as well as cultural practices, has been postulated as driving factors for skin pigmentation variation. Synthesis of vitamin D is a UV radiation (UVR)–dependent process and has remained a prominent theoretical driver for the basis of evolutionary skin lightening. Vitamin D can be acquired both exogenously or endogenously via dietary supplementation or sunlight; however, historically it has been obtained through UVB exposure primarily. Once UVB is absorbed by the skin, it catalyzes conversion of 7-dehydrocholesterol to previtamin D₃, which is converted to vitamin D in the kidneys.^2,3 It is suggested that lighter skin tones have an advantage over darker skin tones in synthesizing vitamin D at higher latitudes where there is less UVB, thus leading to the adaptation process.1 In this systematic review, we analyzed the evolutionary vitamin D adaptation hypothesis and assessed the validity of evidence supporting this theory in the literature.

Methods

A search of PubMed, Embase, and the Cochrane Reviews database was conducted using the terms evolution, vitamin D, and skin to generate articles published from 2010 to 2022 that evaluated the influence of UVR-dependent production of vitamin D on skin pigmentation through historical migration patterns (Figure). Studies were excluded during an initial screening of abstracts followed by full-text assessment if they only had abstracts and if articles were inaccessible for review or in the form of case reports and commentaries.

The following data were extracted from each included study: reference citation, affiliated institutions of authors, author specialties, journal name, year of publication, study period, type of article, type of study, mechanism of adaptation, data concluding or supporting vitamin D as the driver, and data concluding or suggesting against vitamin D as the driver. Data concluding or supporting vitamin D as the driver were recorded from statistically significant results, study conclusions, and direct quotations. Data concluding or suggesting against vitamin D as the driver also were recorded from significant results, study conclusions, and direct quotes. The mechanism of adaptation was based on vitamin D synthesis modulation, melanin upregulation, genetic selections, genetic drift, mating patterns, increased vitamin D sensitivity, interbreeding, and diet.

Studies included in the analysis were placed into 1 of 3 categories: supporting, neutral, and against. Strength of Recommendation Taxonomy (SORT) criteria were used to classify the level of evidence of each article.⁴ Each article’s level of evidence was then graded (Table 1). The SORT grading levels were based on quality and evidence type: level 1 signified good-quality, patient-oriented evidence; level 2 signified limited-quality, patient-oriented evidence; and level 3 signified other evidence.⁴

Results

Article Selection—A total of 229 articles were identified for screening, and 39 studies met inclusion criteria.^1-3,5-40 Systematic and retrospective reviews were the most common types of studies. Genomic analysis/sequencing/genome-wide association studies (GWAS) were the most common methods of analysis. Of these 39 articles, 26 were classified as supporting the evolutionary vitamin D adaptation hypothesis, 10 were classified as neutral, and 3 were classified as against (Table 1). 

Of the articles classified as supporting the vitamin D hypothesis, 13 articles were level 1 evidence, 9 were level 2, and 4 were level 3. Key findings supporting the vitamin D hypothesis included genetic natural selection favoring vitamin D synthesis genes at higher latitudes with lower UVR and the skin lightening that occurred to protect against vitamin D deficiency (Table 1). Specific genes supporting these findings included 7-dehydrocholesterol reductase (DHCR7), vitamin D receptor (VDR), tyrosinase (TYR), tyrosinase-related protein 1 (TYRP1), oculocutaneous albinism type 2 melanosomal transmembrane protein (OCA2), solute carrier family 45 member 2 (SLC45A2), solute carrier family 4 member 5 (SLC24A5), Kit ligand (KITLG), melanocortin 1 receptor (MC1R), and HECT and RLD domain containing E3 ubiquitin protein ligase 2 (HERC2)(Table 2).

uolaslecluveclojibratigudrojimashedespehafrefregicubrivedesofrispeswajoswavatrulostikuspabroshiboswonewrusharuwrusokustetuchauokuuepavawrowrephikakideswijugidrupijechawatorophufruvecegonibroraprubestidramusp

Comment

The importance of appropriate vitamin D levels is hypothesized as a potent driver in skin lightening because the vitamin is essential for many biochemical processes within the human body. Proper calcification of bones requires activated vitamin D to prevent rickets in childhood. Pelvic deformation in women with rickets can obstruct childbirth in primitive medical environments.¹⁵ This direct reproductive impairment suggests a strong selective pressure for skin lightening in populations that migrated northward to enhance vitamin D synthesis. 

Of the 39 articles that we reviewed, the majority (n=26 [66.7%]) supported the hypothesis that vitamin D synthesis was the main driver behind skin lightening, whereas 3 (7.7%) did not support the hypothesis and 10 (25.6%) were neutral. Other leading theories explaining skin lightening included the idea that enhanced melanogenesis protected against folate degradation; genetic selection for light-skin alleles due to genetic drift; skin lightening being the result of sexual selection; and a combination of factors, including dietary choices, clothing preferences, and skin permeability barriers. 

Articles With Supporting Evidence for the Vitamin D Theory—As Homo sapiens migrated out of Africa, migration patterns demonstrated the correlation between distance from the equator and skin pigmentation from natural selection. Individuals with darker skin pigment required higher levels of UVR to synthesize vitamin D. According to Beleza et al,1 as humans migrated to areas of higher latitudes with lower levels of UVR, natural selection favored the development of lighter skin to maximize vitamin D production. Vitamin D is linked to calcium metabolism, and its deficiency can lead to bone malformations and poor immune function.³⁵ Several genes affecting melanogenesis and skin pigment have been found to have geospatial patterns that map to different geographic locations of various populations, indicating how human migration patterns out of Africa created this natural selection for skin lightening. The gene KITLG—associated with lighter skin pigmentation—has been found in high frequencies in both European and East Asian populations and is proposed to have increased in frequency after the migration out of Africa. However, the genes TYRP1, SLC24A5, and SLC45A2 were found at high frequencies only in European populations, and this selection occurred 11,000 to 19,000 years ago during the Last Glacial Maximum (15,000–20,000 years ago), demonstrating the selection for European over East Asian characteristics. During this period, seasonal changes increased the risk for vitamin D deficiency and provided an urgency for selection to a lighter skin pigment.¹

The migration of H sapiens to northern latitudes prompted the selection of alleles that would increasevitamin D synthesis to counteract the reduced UV exposure. Genetic analysis studies have found key associations between genes encoding for the metabolism of vitamin D and pigmentation. Among this complex network are the essential downstream enzymes in the melanocortin receptor 1 pathway, including TYR and TYRP1. Forty-six of 960 single-nucleotide polymorphisms located in 29 different genes involved in skin pigmentation that were analyzed in a cohort of 2970 individuals were significantly associated with serum vitamin D levels (P<.05). The exocyst complex component 2 (EXOC2), TYR, and TYRP1 gene variants were shown to have the greatest influence on vitamin D status.⁹ These data reveal how pigment genotypes are predictive of vitamin D levels and the epistatic potential among many genes in this complex network. 

Gene variation plays an important role in vitamin D status when comparing genetic polymorphisms in populations in northern latitudes to African populations. Vitamin D₃ precursor availability is decreased by 7-DHCR catalyzing the precursors substrate to cholesterol. In a study using GWAS, it was found that “variations in DHCR7 may aid vitamin D production by conserving cutaneous 7-DHC levels. A high prevalence of DHCR7 variants were found in European and Northeast Asian populations but not in African populations, suggesting that selection occurred for these DHCR7 mutations in populations who migrated to more northern latitudes.⁵ Multilocus networks have been established between the VDR promotor and skin color genes (Table 2) that exhibit a strong in-Africa vs out-of-Africa frequency pattern. It also has been shown that genetic variation (suggesting a long-term evolutionary inclination) and epigenetic modification (indicative of short-term exposure) of VDR lends support to the vitamin D hypothesis. As latitude decreases, prevalence of VDR FokI (F allele), BsmI (B allele), ApaI (A allele), and TaqI (T allele) also decreases in a linear manner, linking latitude to VDR polymorphisms. Plasma vitamin D levels and photoperiod of conception—UV exposure during the periconceptional period—also were extrapolative of VDR methylation in a study involving 80 participants, where these 2 factors accounted for 17% of variance in methylation.⁶

vephachiprobetrelisutruspishouishophipiphucluchegobesodroswodrasluchachukoprotecishustephocherotropruhiphigechacauojobrephufraswawracheslewechiwrispuspebelidrephegabrithuphoruphathaceboliw

wrehoswojospiswodenabrudephedorimuhedaciuihu

Other noteworthy genes included HERC2, which has implications in the expression of OCA2 (melanocyte-specific transporter protein), and IRF4, which encodes for an important enzyme in folate-dependent melanin production. In an Australian cross-sectional study that analyzed vitamin D and pigmentation gene polymorphisms in conjunction with plasma vitamin D levels, the most notable rate of vitamin D loss occurred in individuals with the darkest pigmentation HERC2 (AA) genotype.³¹ In contrast, the lightest pigmentation HERC2 (GG) genotypes had increased vitamin D₃ photosynthesis. Interestingly, the lightest interferon regulatory factor 4 (IRF4) TT genotype and the darkest HERC2 AA genotype, rendering the greatest folate loss and largest synthesis of vitamin D₃, were not seen in combination in any of the participants.³⁰ In addition to HERC2, derived alleles from pigment-associated genes SLC24A5*A and SLC45A2*G demonstrated greater frequencies in Europeans (>90%) compared to Africans and East Asians, where the allelic frequencies were either rare or absent.1 This evidence delineates not only the complexity but also the strong relationship between skin pigmentation, latitude, and vitamin D status. The GWAS also have supported this concept. In comparing European populations to African populations, there was a 4-fold increase in the frequencies of “derived alleles of the vitamin D transport protein (GC, rs3755967), the 25(OH)D₃ synthesizing enzyme (CYP2R1, rs10741657), VDR (rs2228570 (commonly known as FokI polymorphism), rs1544410 (Bsm1), and rs731236 (Taq1) and the VDR target genes CYP24A1 (rs17216707), CD14 (rs2569190), and CARD9 (rs4077515).”³²

Articles With Evidence Against the Vitamin D Theory—This review analyzed the level of support for the theory that vitamin D was the main driver for skin lightening. Although most articles supported this theory, there were articles that listed other plausible counterarguments. Jablonski and Chaplin3 suggested that humans living in higher latitudes compensated for increased demand of vitamin D by placing cultural importance on a diet of vitamin D–rich foods and thus would not have experienced decreased vitamin D levels, which we hypothesize were the driver for skin lightening. Elias et al³⁹ argued that initial pigment dilution may have instead served to improve metabolic conservation, as the authors found no evidence of rickets—the sequelae of vitamin D deficiency—in pre–industrial age human fossils. Elias and Williams3⁸ proposed that differences in skin pigment are due to a more intact skin permeability barrier as “a requirement for life in a desiccating terrestrial environment,” which is seen in darker skin tones compared to lighter skin tones and thus can survive better in warmer climates with less risk of infections or dehydration.

Articles With Neutral Evidence for the Vitamin D Theory—Greaves⁴¹ argued against the idea that skin evolved to become lighter to protect against vitamin D deficiency. They proposed that the chimpanzee, which is the human’s most closely related species, had light skin covered by hair, and the loss of this hair led to exposed pale skin that created a need for increased melanin production for protection from UVR. Greaves⁴¹ stated that the MC1R gene (associated with darker pigmentation) was selected for in African populations, and those with pale skin retained their original pigment as they migrated to higher latitudes. Further research has demonstrated that the genetic natural selection for skin pigment is a complex process that involves multiple gene variants found throughout cultures across the globe.

sobrochugiphipro

Conclusion

Skin pigmentation has continuously evolved alongside humans. Genetic selection for lighter skin coincides with a favorable selection for genes involved in vitamin D synthesis as humans migrated to northern latitudes, which enabled humans to produce adequate levels of exogenous vitamin D in low-UVR areas and in turn promoted survival. Early humans without access to supplementation or foods rich in vitamin D acquired vitamin D primarily through sunlight. In comparison to modern society, where vitamin D supplementation is accessible and human lifespans are prolonged, lighter skin tone is now a risk factor for malignant cancers of the skin rather than being a protective adaptation. Current sun behavior recommendations conclude that the body’s need for vitamin D is satisfied by UV exposure to the arms, legs, hands, and/or face for only 5 to 30 minutes between 10 am and 4 pm daily without sunscreen.^42-44 Approximately 600 IU of vitamin D supplementation daily is recommended in a typical adult younger than 70 years to avoid deficiency. In adults 70 years and older who are not receiving adequate sunlight exposure, 800 IU of daily vitamin D supplementation is recommended.⁴⁵

The hypothesis that skin lightening primarily was driven by the need for vitamin D can only be partially supported by our review. Studies have shown that there is a corresponding complex network of genes that determines skin pigmentation as well as vitamin D synthesis and conservation. However, there is sufficient evidence that skin lightening is multifactorial in nature, and vitamin D alone may not be the sole driver. The information in this review can be used by health care providers to educate patients on sun protection, given the lesser threat of severe vitamin D deficiency in developed communities today that have access to adequate nutrition and supplementation.

Skin lightening and its coinciding evolutionary drivers are a rather neglected area of research. Due to heterogeneous cohorts and conservative data analysis, GWAS studies run the risk of type II error, yielding a limitation in our data analysis.⁹ Furthermore, the data regarding specific time frames in evolutionary skin lightening as well as the intensity of gene polymorphisms are limited.1 Further studies are needed to determine the interconnectedness of the current skin-lightening theories to identify other important factors that may play a role in the process. Determining the key event can help us better understand skin-adaptation mechanisms and create a framework for understanding the vital process involved in adaptation, survival, and disease manifestation in different patient populations.

Racial discrimination in Black Americans is associated with an increased risk of developing Alzheimer’s disease (AD) in later life, new findings showed.

Researchers found that Black Americans who experience racism in their 40s and 50s are more likely to have increased serum levels of AD biomarkers p-tau181 and neurofilament light (NfL) more than a decade later.

“We know that Black Americans are at an elevated risk of Alzheimer’s disease and other dementias compared to non-Hispanic White Americans, but we don’t fully understand all the factors that contribute to this disproportionate risk,” Michelle Mielke, PhD, co-author and professor of epidemiology and prevention at Wake Forest University School of Medicine, Winston-Salem, North Carolina, said in a press release.

Recent data show AD is twice as prevalent in Black Americans as in Whites, at 18.6% and 10%, respectively. Dr. Mielke said this level of disparity cannot be attributed solely to genetic differences, and evidence suggests that racism and its related stress may play a role.

The findings were published online in Alzheimer’s and Dementia.
 

AD Biomarker Testing

To further explore a possible link between exposure to racism and AD risk, investigators analyzed data from the Family and Community Health Study, a multisite, longitudinal investigation that included more than 800 families in the United States.

Blood samples and information on racial discrimination were collected from 255 middle-aged Black Americans between 2002 and 2005.

Blood samples were tested for serum phosphorylated tau181 (p-Tau181), a marker of AD pathology; NfL, a nonspecific marker of neurodegeneration; and glial fibrillary acidic protein (GFAP), a marker of brain inflammation.

Participants answered questions about racial discrimination, which included whether they have been subjected to disrespectful treatment including racial slurs, harassment from law enforcement, or if they had ever been excluded from social activities because of their race.

The sample included 212 females and 43 males with a mean age of 46. Most participants (70%) lived in urban areas.
 

Stress-Related?

Investigators found no correlation between racial discrimination and increased levels of AD blood biomarkers in 2008 when participants were a mean age of 46 years. However, 11 years later, when participants were roughly 57 years old, investigators found experiencing racism in middle age was significantly correlated with higher levels of both p-Tau181 (r = 0.158; P ≤ .012) and NfL (r = 0.143; P ≤ .023). There was no significant association between reported discrimination and GFAP.

“These findings support the hypothesis that unique life stressors encountered by Black Americans in midlife become biologically embedded and contribute to AD pathology and neurodegeneration later in life,” the authors wrote.

Investigators speculated based on previous research that the stress related to discrimination may be associated with reductions in hippocampal and prefrontal cortex volumes and neurodegeneration in general.

Dr. Mielke also said it’s clear that future studies should focus on racism experienced by Black Americans to further understand their risk for dementia.

“This research can help inform policies and interventions to reduce racial disparities and reduce dementia risk,” she said.

Study limitations include the absence of amyloid biomarkers. Investigators noted that participants had non-detectable levels of amyloid, likely due to the use of serum vs cerebrospinal fluid.

The study was funded by the National Institute on Aging and the National Heart, Lung, and Blood Institute. Mielke reported serving on scientific advisory boards and/or having consulted for Acadia, Biogen, Eisai, LabCorp, Lilly, Merck, PeerView Institute, Roche, Siemens Healthineers, and Sunbird Bio.

A version of this article appeared on Medscape.com.

Racial discrimination in Black Americans is associated with an increased risk of developing Alzheimer’s disease (AD) in later life, new findings showed.

Researchers found that Black Americans who experience racism in their 40s and 50s are more likely to have increased serum levels of AD biomarkers p-tau181 and neurofilament light (NfL) more than a decade later.

“We know that Black Americans are at an elevated risk of Alzheimer’s disease and other dementias compared to non-Hispanic White Americans, but we don’t fully understand all the factors that contribute to this disproportionate risk,” Michelle Mielke, PhD, co-author and professor of epidemiology and prevention at Wake Forest University School of Medicine, Winston-Salem, North Carolina, said in a press release.

Recent data show AD is twice as prevalent in Black Americans as in Whites, at 18.6% and 10%, respectively. Dr. Mielke said this level of disparity cannot be attributed solely to genetic differences, and evidence suggests that racism and its related stress may play a role.

The findings were published online in Alzheimer’s and Dementia.
 

AD Biomarker Testing

To further explore a possible link between exposure to racism and AD risk, investigators analyzed data from the Family and Community Health Study, a multisite, longitudinal investigation that included more than 800 families in the United States.

Blood samples and information on racial discrimination were collected from 255 middle-aged Black Americans between 2002 and 2005.

Blood samples were tested for serum phosphorylated tau181 (p-Tau181), a marker of AD pathology; NfL, a nonspecific marker of neurodegeneration; and glial fibrillary acidic protein (GFAP), a marker of brain inflammation.

Participants answered questions about racial discrimination, which included whether they have been subjected to disrespectful treatment including racial slurs, harassment from law enforcement, or if they had ever been excluded from social activities because of their race.

The sample included 212 females and 43 males with a mean age of 46. Most participants (70%) lived in urban areas.
 

Stress-Related?

Investigators found no correlation between racial discrimination and increased levels of AD blood biomarkers in 2008 when participants were a mean age of 46 years. However, 11 years later, when participants were roughly 57 years old, investigators found experiencing racism in middle age was significantly correlated with higher levels of both p-Tau181 (r = 0.158; P ≤ .012) and NfL (r = 0.143; P ≤ .023). There was no significant association between reported discrimination and GFAP.

“These findings support the hypothesis that unique life stressors encountered by Black Americans in midlife become biologically embedded and contribute to AD pathology and neurodegeneration later in life,” the authors wrote.

Investigators speculated based on previous research that the stress related to discrimination may be associated with reductions in hippocampal and prefrontal cortex volumes and neurodegeneration in general.

Dr. Mielke also said it’s clear that future studies should focus on racism experienced by Black Americans to further understand their risk for dementia.

“This research can help inform policies and interventions to reduce racial disparities and reduce dementia risk,” she said.

Study limitations include the absence of amyloid biomarkers. Investigators noted that participants had non-detectable levels of amyloid, likely due to the use of serum vs cerebrospinal fluid.

The study was funded by the National Institute on Aging and the National Heart, Lung, and Blood Institute. Mielke reported serving on scientific advisory boards and/or having consulted for Acadia, Biogen, Eisai, LabCorp, Lilly, Merck, PeerView Institute, Roche, Siemens Healthineers, and Sunbird Bio.

A version of this article appeared on Medscape.com.

Racial discrimination in Black Americans is associated with an increased risk of developing Alzheimer’s disease (AD) in later life, new findings showed.

Researchers found that Black Americans who experience racism in their 40s and 50s are more likely to have increased serum levels of AD biomarkers p-tau181 and neurofilament light (NfL) more than a decade later.

“We know that Black Americans are at an elevated risk of Alzheimer’s disease and other dementias compared to non-Hispanic White Americans, but we don’t fully understand all the factors that contribute to this disproportionate risk,” Michelle Mielke, PhD, co-author and professor of epidemiology and prevention at Wake Forest University School of Medicine, Winston-Salem, North Carolina, said in a press release.

Recent data show AD is twice as prevalent in Black Americans as in Whites, at 18.6% and 10%, respectively. Dr. Mielke said this level of disparity cannot be attributed solely to genetic differences, and evidence suggests that racism and its related stress may play a role.

The findings were published online in Alzheimer’s and Dementia.
 

AD Biomarker Testing

To further explore a possible link between exposure to racism and AD risk, investigators analyzed data from the Family and Community Health Study, a multisite, longitudinal investigation that included more than 800 families in the United States.

Blood samples and information on racial discrimination were collected from 255 middle-aged Black Americans between 2002 and 2005.

Blood samples were tested for serum phosphorylated tau181 (p-Tau181), a marker of AD pathology; NfL, a nonspecific marker of neurodegeneration; and glial fibrillary acidic protein (GFAP), a marker of brain inflammation.

Participants answered questions about racial discrimination, which included whether they have been subjected to disrespectful treatment including racial slurs, harassment from law enforcement, or if they had ever been excluded from social activities because of their race.

The sample included 212 females and 43 males with a mean age of 46. Most participants (70%) lived in urban areas.
 

Stress-Related?

Investigators found no correlation between racial discrimination and increased levels of AD blood biomarkers in 2008 when participants were a mean age of 46 years. However, 11 years later, when participants were roughly 57 years old, investigators found experiencing racism in middle age was significantly correlated with higher levels of both p-Tau181 (r = 0.158; P ≤ .012) and NfL (r = 0.143; P ≤ .023). There was no significant association between reported discrimination and GFAP.

“These findings support the hypothesis that unique life stressors encountered by Black Americans in midlife become biologically embedded and contribute to AD pathology and neurodegeneration later in life,” the authors wrote.

Investigators speculated based on previous research that the stress related to discrimination may be associated with reductions in hippocampal and prefrontal cortex volumes and neurodegeneration in general.

Dr. Mielke also said it’s clear that future studies should focus on racism experienced by Black Americans to further understand their risk for dementia.

“This research can help inform policies and interventions to reduce racial disparities and reduce dementia risk,” she said.

Study limitations include the absence of amyloid biomarkers. Investigators noted that participants had non-detectable levels of amyloid, likely due to the use of serum vs cerebrospinal fluid.

The study was funded by the National Institute on Aging and the National Heart, Lung, and Blood Institute. Mielke reported serving on scientific advisory boards and/or having consulted for Acadia, Biogen, Eisai, LabCorp, Lilly, Merck, PeerView Institute, Roche, Siemens Healthineers, and Sunbird Bio.

A version of this article appeared on Medscape.com.

Darker skin tones were underrepresented in images on patient-facing online educational material about skin cancer, an analysis of photos from six different federal and organization websites showed.

“Given the known disparities patients with darker skin tones face in terms of increased skin cancer morbidity and mortality, this lack of representation further disadvantages those patients by not providing them with an adequate representation of how skin cancers manifest on their skin tones,” the study’s first author, Alana Sadur, who recently completed her third year at the George Washington School of Medicine and Health Sciences, Washington, said in an interview. “By not having images to refer to, patients are less likely to self-identify and seek treatment for concerning skin lesions.”

For the study, which was published in Journal of Drugs in Dermatology, Ms. Sadur and coauthors evaluated the inclusivity and representation of skin tones in photos of skin cancer on the following patient-facing websites: CDC.gov, NIH.gov, skincancer.org, americancancerfund.org, mayoclinic.org, and cancer.org. The researchers counted each individual person or image showing skin as a separate representation, and three independent reviewers used the 5-color Pantone swatch as described in a dermatology atlas to categorize representations as “lighter-toned skin” (Pantones A-B or lighter) or “darker-toned skin” (Pantones C-E or darker). 

Of the 372 total representations identified on the websites, only 49 (13.2%) showed darker skin tones. Of these, 44.9% depicted Pantone C, 34.7% depicted Pantone D, and 20.4% depicted Pantone E. The researchers also found that only 11% of nonmelanoma skin cancers (NMSC) and 5.8% of melanoma skin cancers (MSC) were shown on darker skin tones, while no cartoon portrayals of NMSC or MSC included darker skin tones.

In findings related to nondisease representations on the websites, darker skin tones were depicted in just 22.7% of stock photos and 26.1% of website front pages.

The study’s senior author, Adam Friedman, MD, professor and chair of dermatology at George Washington University, Washington, emphasized the need for trusted sources like national organizations and federally funded agencies to be purposeful with their selection of images to “ensure all visitors to the site are represented,” he told this news organization.

“This is very important when dealing with skin cancer as a lack of representation could easily be misinterpreted as epidemiological data, meaning this gap could suggest certain individuals do not get skin cancer because photos in those skin tones are not present,” he added. “This doesn’t even begin to touch upon the diversity of individuals in the stock photos or lack thereof, which can perpetuate the lack of diversity in our specialty. We need to do better.”

The authors reported having no relevant disclosures.

A version of this article first appeared on Medscape.com.

Darker skin tones were underrepresented in images on patient-facing online educational material about skin cancer, an analysis of photos from six different federal and organization websites showed.

“Given the known disparities patients with darker skin tones face in terms of increased skin cancer morbidity and mortality, this lack of representation further disadvantages those patients by not providing them with an adequate representation of how skin cancers manifest on their skin tones,” the study’s first author, Alana Sadur, who recently completed her third year at the George Washington School of Medicine and Health Sciences, Washington, said in an interview. “By not having images to refer to, patients are less likely to self-identify and seek treatment for concerning skin lesions.”

For the study, which was published in Journal of Drugs in Dermatology, Ms. Sadur and coauthors evaluated the inclusivity and representation of skin tones in photos of skin cancer on the following patient-facing websites: CDC.gov, NIH.gov, skincancer.org, americancancerfund.org, mayoclinic.org, and cancer.org. The researchers counted each individual person or image showing skin as a separate representation, and three independent reviewers used the 5-color Pantone swatch as described in a dermatology atlas to categorize representations as “lighter-toned skin” (Pantones A-B or lighter) or “darker-toned skin” (Pantones C-E or darker). 

Of the 372 total representations identified on the websites, only 49 (13.2%) showed darker skin tones. Of these, 44.9% depicted Pantone C, 34.7% depicted Pantone D, and 20.4% depicted Pantone E. The researchers also found that only 11% of nonmelanoma skin cancers (NMSC) and 5.8% of melanoma skin cancers (MSC) were shown on darker skin tones, while no cartoon portrayals of NMSC or MSC included darker skin tones.

In findings related to nondisease representations on the websites, darker skin tones were depicted in just 22.7% of stock photos and 26.1% of website front pages.

The study’s senior author, Adam Friedman, MD, professor and chair of dermatology at George Washington University, Washington, emphasized the need for trusted sources like national organizations and federally funded agencies to be purposeful with their selection of images to “ensure all visitors to the site are represented,” he told this news organization.

“This is very important when dealing with skin cancer as a lack of representation could easily be misinterpreted as epidemiological data, meaning this gap could suggest certain individuals do not get skin cancer because photos in those skin tones are not present,” he added. “This doesn’t even begin to touch upon the diversity of individuals in the stock photos or lack thereof, which can perpetuate the lack of diversity in our specialty. We need to do better.”

The authors reported having no relevant disclosures.

A version of this article first appeared on Medscape.com.

Darker skin tones were underrepresented in images on patient-facing online educational material about skin cancer, an analysis of photos from six different federal and organization websites showed.

“Given the known disparities patients with darker skin tones face in terms of increased skin cancer morbidity and mortality, this lack of representation further disadvantages those patients by not providing them with an adequate representation of how skin cancers manifest on their skin tones,” the study’s first author, Alana Sadur, who recently completed her third year at the George Washington School of Medicine and Health Sciences, Washington, said in an interview. “By not having images to refer to, patients are less likely to self-identify and seek treatment for concerning skin lesions.”

For the study, which was published in Journal of Drugs in Dermatology, Ms. Sadur and coauthors evaluated the inclusivity and representation of skin tones in photos of skin cancer on the following patient-facing websites: CDC.gov, NIH.gov, skincancer.org, americancancerfund.org, mayoclinic.org, and cancer.org. The researchers counted each individual person or image showing skin as a separate representation, and three independent reviewers used the 5-color Pantone swatch as described in a dermatology atlas to categorize representations as “lighter-toned skin” (Pantones A-B or lighter) or “darker-toned skin” (Pantones C-E or darker). 

Of the 372 total representations identified on the websites, only 49 (13.2%) showed darker skin tones. Of these, 44.9% depicted Pantone C, 34.7% depicted Pantone D, and 20.4% depicted Pantone E. The researchers also found that only 11% of nonmelanoma skin cancers (NMSC) and 5.8% of melanoma skin cancers (MSC) were shown on darker skin tones, while no cartoon portrayals of NMSC or MSC included darker skin tones.

In findings related to nondisease representations on the websites, darker skin tones were depicted in just 22.7% of stock photos and 26.1% of website front pages.

The study’s senior author, Adam Friedman, MD, professor and chair of dermatology at George Washington University, Washington, emphasized the need for trusted sources like national organizations and federally funded agencies to be purposeful with their selection of images to “ensure all visitors to the site are represented,” he told this news organization.

“This is very important when dealing with skin cancer as a lack of representation could easily be misinterpreted as epidemiological data, meaning this gap could suggest certain individuals do not get skin cancer because photos in those skin tones are not present,” he added. “This doesn’t even begin to touch upon the diversity of individuals in the stock photos or lack thereof, which can perpetuate the lack of diversity in our specialty. We need to do better.”

The authors reported having no relevant disclosures.

A version of this article first appeared on Medscape.com.

BALTIMORE — Laser treatment for solar lentigines in individuals with darker skin types has long been associated with a higher risk of postinflammatory hyperpigmentation (PIH), but a small study in Thailand has shown the 532-nm picosecond laser with a fractional beam microlens array (MLA) had a significantly lower incidence of PIH than the full-beam treatment without MLA.

The study enrolled 27 patients with solar lentigines and Fitzpatrick skin types (FSTs) III-IV, Woraphong Manuskiatti, MD, professor of dermatology at Siriraj Hospital, Mahidol University, Bangkok, reported at the annual meeting of the American Society for Laser Medicine and Surgery. They received the fractional beam treatment on one side of the face and the full-beam on the other side. At 6 months, the incidence of PIH was about 81% lower on the fractional-beam side, Dr. Manuskiatti said.

“In the past, when we used laser to treat pigmented lesions, we used the so-called full-beam technique on the pigmented area,” Dr. Manuskiatti told this news organization. “From the study, we found that you don’t need to treat it at 100%. You can fractionally treat the pigmented lesion and get a really comparable treatment outcome and, at that reduced beam, less incidence of postinflammatory hyperpigmentation.”
 

Study Design and Results

Of the 27 patients in the study, 12 were FST III (44%), 14 were FST IV (52%), and one was FST V (4%). On the fractional-beam side, the laser was delivered through a 9-mm spot size with an average fluence of 0.47 J/cm² at a frequency of 2 Hz for a total of two passes without pulse overlapping. On the full-beam side, the laser was operated with a 4.5-mm handpiece, with fluence ranging from 0.3 to 0.7 J/cm² (using an endpoint of slight darkening of the pigmented lesion) at 2 Hz.

The patients received a single treatment and had a clinical evaluation and color reading assessments at 2 weeks, 1 month, 3 months, and 6 months after the treatment. Twenty-five patients completed the study.

The researchers found no statistically significant differences in lesional clearance between the two techniques at any of the follow-up assessments, Dr. Manuskiatti said. “This might be one of the alternative treatments of treating solar lentigines in dark-skinned patients,” he said when presenting the study results.

He reported the rates of PIH on the full-beam and fractional-beam sides, respectively, at the following intervals were: 64% and 8% at 2 weeks, 80% and 32% at 1 month, 96% and 36% at 3 months, and 88% and 16% at 6 months.

“The incidence of PIH on the full-beam side was statistically higher than that on the fractional-beam side throughout the follow-up period,” he said. Transient and mild hypopigmentation was observed in one patient (4%) on the fractional-beam side and in five (20%) on the full-beam side. Dr. Manuskiatti added that no other adverse effects were documented during the study.

“ Normally when you use laser to treat skin type I or II, you don’t have … PIH or darkening of the skin,” Dr. Manuskiatti told this news organization, “but when you have skin type III and above, you run into a really high incidence of postinflammatory hyperpigmentation — and treating that with fractional beam can lead to a reduced incidence of darkening of the skin afterward.”
 

A Lower-Cost Option

This study showed that the 532-nm picosecond laser with fractional beam MLA is a useful option for patients with darker skin types, Kelly Stankiewicz, MD, a dermatologist who practices in Park City, Utah, and moderated the session where these results were presented, told this news organization.

“The most challenging thing about treating lentigines in darker skin types is preventing potential side effects, mainly dyspigmentation,” she said after the meeting. “These side effects are, for the most part, temporary, but they can take 6-18 months to resolve, so it’s important to prevent them in the first place.”

She noted that the 532-nm and 1064-nm wavelengths are the most commonly available for picosecond lasers and that they’re easier to produce and less expensive. “There are picosecond lasers with middle wavelengths in the red light to near-infrared range (650-785 nm) that are better for darker skin types because they are more gentle yet still effective at targeting pigment, but these lasers are more expensive and less widely available,” Dr. Stankiewicz said. 

“The microlens array, used in this study with the 532-nm wavelength, is an inexpensive piece that fits at the end of the laser,” she added. “So, to have an option that turns a 532-nm laser into a safer device for the treatment of lentigines in darker skin types is very helpful.”

Dr. Manuskiatti and Dr. Stankiewicz had no relevant disclosures to report.
 

A version of this article first appeared on Medscape.com.

BALTIMORE — Laser treatment for solar lentigines in individuals with darker skin types has long been associated with a higher risk of postinflammatory hyperpigmentation (PIH), but a small study in Thailand has shown the 532-nm picosecond laser with a fractional beam microlens array (MLA) had a significantly lower incidence of PIH than the full-beam treatment without MLA.

The study enrolled 27 patients with solar lentigines and Fitzpatrick skin types (FSTs) III-IV, Woraphong Manuskiatti, MD, professor of dermatology at Siriraj Hospital, Mahidol University, Bangkok, reported at the annual meeting of the American Society for Laser Medicine and Surgery. They received the fractional beam treatment on one side of the face and the full-beam on the other side. At 6 months, the incidence of PIH was about 81% lower on the fractional-beam side, Dr. Manuskiatti said.

“In the past, when we used laser to treat pigmented lesions, we used the so-called full-beam technique on the pigmented area,” Dr. Manuskiatti told this news organization. “From the study, we found that you don’t need to treat it at 100%. You can fractionally treat the pigmented lesion and get a really comparable treatment outcome and, at that reduced beam, less incidence of postinflammatory hyperpigmentation.”
 

Study Design and Results

Of the 27 patients in the study, 12 were FST III (44%), 14 were FST IV (52%), and one was FST V (4%). On the fractional-beam side, the laser was delivered through a 9-mm spot size with an average fluence of 0.47 J/cm² at a frequency of 2 Hz for a total of two passes without pulse overlapping. On the full-beam side, the laser was operated with a 4.5-mm handpiece, with fluence ranging from 0.3 to 0.7 J/cm² (using an endpoint of slight darkening of the pigmented lesion) at 2 Hz.

The patients received a single treatment and had a clinical evaluation and color reading assessments at 2 weeks, 1 month, 3 months, and 6 months after the treatment. Twenty-five patients completed the study.

The researchers found no statistically significant differences in lesional clearance between the two techniques at any of the follow-up assessments, Dr. Manuskiatti said. “This might be one of the alternative treatments of treating solar lentigines in dark-skinned patients,” he said when presenting the study results.

He reported the rates of PIH on the full-beam and fractional-beam sides, respectively, at the following intervals were: 64% and 8% at 2 weeks, 80% and 32% at 1 month, 96% and 36% at 3 months, and 88% and 16% at 6 months.

“The incidence of PIH on the full-beam side was statistically higher than that on the fractional-beam side throughout the follow-up period,” he said. Transient and mild hypopigmentation was observed in one patient (4%) on the fractional-beam side and in five (20%) on the full-beam side. Dr. Manuskiatti added that no other adverse effects were documented during the study.

“ Normally when you use laser to treat skin type I or II, you don’t have … PIH or darkening of the skin,” Dr. Manuskiatti told this news organization, “but when you have skin type III and above, you run into a really high incidence of postinflammatory hyperpigmentation — and treating that with fractional beam can lead to a reduced incidence of darkening of the skin afterward.”
 

A Lower-Cost Option

This study showed that the 532-nm picosecond laser with fractional beam MLA is a useful option for patients with darker skin types, Kelly Stankiewicz, MD, a dermatologist who practices in Park City, Utah, and moderated the session where these results were presented, told this news organization.

“The most challenging thing about treating lentigines in darker skin types is preventing potential side effects, mainly dyspigmentation,” she said after the meeting. “These side effects are, for the most part, temporary, but they can take 6-18 months to resolve, so it’s important to prevent them in the first place.”

She noted that the 532-nm and 1064-nm wavelengths are the most commonly available for picosecond lasers and that they’re easier to produce and less expensive. “There are picosecond lasers with middle wavelengths in the red light to near-infrared range (650-785 nm) that are better for darker skin types because they are more gentle yet still effective at targeting pigment, but these lasers are more expensive and less widely available,” Dr. Stankiewicz said. 

“The microlens array, used in this study with the 532-nm wavelength, is an inexpensive piece that fits at the end of the laser,” she added. “So, to have an option that turns a 532-nm laser into a safer device for the treatment of lentigines in darker skin types is very helpful.”

Dr. Manuskiatti and Dr. Stankiewicz had no relevant disclosures to report.
 

A version of this article first appeared on Medscape.com.

BALTIMORE — Laser treatment for solar lentigines in individuals with darker skin types has long been associated with a higher risk of postinflammatory hyperpigmentation (PIH), but a small study in Thailand has shown the 532-nm picosecond laser with a fractional beam microlens array (MLA) had a significantly lower incidence of PIH than the full-beam treatment without MLA.

The study enrolled 27 patients with solar lentigines and Fitzpatrick skin types (FSTs) III-IV, Woraphong Manuskiatti, MD, professor of dermatology at Siriraj Hospital, Mahidol University, Bangkok, reported at the annual meeting of the American Society for Laser Medicine and Surgery. They received the fractional beam treatment on one side of the face and the full-beam on the other side. At 6 months, the incidence of PIH was about 81% lower on the fractional-beam side, Dr. Manuskiatti said.

“In the past, when we used laser to treat pigmented lesions, we used the so-called full-beam technique on the pigmented area,” Dr. Manuskiatti told this news organization. “From the study, we found that you don’t need to treat it at 100%. You can fractionally treat the pigmented lesion and get a really comparable treatment outcome and, at that reduced beam, less incidence of postinflammatory hyperpigmentation.”
 

Study Design and Results

Of the 27 patients in the study, 12 were FST III (44%), 14 were FST IV (52%), and one was FST V (4%). On the fractional-beam side, the laser was delivered through a 9-mm spot size with an average fluence of 0.47 J/cm² at a frequency of 2 Hz for a total of two passes without pulse overlapping. On the full-beam side, the laser was operated with a 4.5-mm handpiece, with fluence ranging from 0.3 to 0.7 J/cm² (using an endpoint of slight darkening of the pigmented lesion) at 2 Hz.

The patients received a single treatment and had a clinical evaluation and color reading assessments at 2 weeks, 1 month, 3 months, and 6 months after the treatment. Twenty-five patients completed the study.

The researchers found no statistically significant differences in lesional clearance between the two techniques at any of the follow-up assessments, Dr. Manuskiatti said. “This might be one of the alternative treatments of treating solar lentigines in dark-skinned patients,” he said when presenting the study results.

He reported the rates of PIH on the full-beam and fractional-beam sides, respectively, at the following intervals were: 64% and 8% at 2 weeks, 80% and 32% at 1 month, 96% and 36% at 3 months, and 88% and 16% at 6 months.

“The incidence of PIH on the full-beam side was statistically higher than that on the fractional-beam side throughout the follow-up period,” he said. Transient and mild hypopigmentation was observed in one patient (4%) on the fractional-beam side and in five (20%) on the full-beam side. Dr. Manuskiatti added that no other adverse effects were documented during the study.

“ Normally when you use laser to treat skin type I or II, you don’t have … PIH or darkening of the skin,” Dr. Manuskiatti told this news organization, “but when you have skin type III and above, you run into a really high incidence of postinflammatory hyperpigmentation — and treating that with fractional beam can lead to a reduced incidence of darkening of the skin afterward.”
 

A Lower-Cost Option

This study showed that the 532-nm picosecond laser with fractional beam MLA is a useful option for patients with darker skin types, Kelly Stankiewicz, MD, a dermatologist who practices in Park City, Utah, and moderated the session where these results were presented, told this news organization.

“The most challenging thing about treating lentigines in darker skin types is preventing potential side effects, mainly dyspigmentation,” she said after the meeting. “These side effects are, for the most part, temporary, but they can take 6-18 months to resolve, so it’s important to prevent them in the first place.”

She noted that the 532-nm and 1064-nm wavelengths are the most commonly available for picosecond lasers and that they’re easier to produce and less expensive. “There are picosecond lasers with middle wavelengths in the red light to near-infrared range (650-785 nm) that are better for darker skin types because they are more gentle yet still effective at targeting pigment, but these lasers are more expensive and less widely available,” Dr. Stankiewicz said. 

“The microlens array, used in this study with the 532-nm wavelength, is an inexpensive piece that fits at the end of the laser,” she added. “So, to have an option that turns a 532-nm laser into a safer device for the treatment of lentigines in darker skin types is very helpful.”

Dr. Manuskiatti and Dr. Stankiewicz had no relevant disclosures to report.
 

A version of this article first appeared on Medscape.com.