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A lifetime of physical inactivity could significantly increase the risk of developing both Hodgkin and non-Hodgkin lymphoma, according to a case-control study.
Researchers examined self-reported lifetime physical activity in 87 patients with Hodgkin lymphoma and 236 patients with non-Hodgkin lymphoma, as well as 1,300 cancer-free controls.
Researchers also found a nearly threefold higher risk of Hodgkin lymphoma among overweight and obese individuals who were physically inactive, compared with those who were active (odds ratio, 2.79; P = .01). Similarly, physically inactive individuals who had never smoked had a greater than threefold increase in risk, compared with never-smokers who were active (OR, 3.30; P less than .001). But despite these significant associations for smoking and weight, the small samples sizes meant they were not significant in multivariable-adjusted models, the researchers noted. For non-Hodgkin lymphoma, the associations between obesity/overweight and smoking status were also not statistically significant in multivariable-adjusted models.
Previous studies looking at the role of physical activity in Hodgkin and non-Hodgkin lymphoma had yielded mixed and inconclusive results. Since then, researchers have begun to specifically consider the role of physical inactivity, rather than physical activity, as the exposure of interest.
“An additional advantage of identifying inactivity as the exposure of interest is that a body of literature suggests that those who are at the lower end of the physical activity continuum are less likely to overreport physical activity than those who engage in greater levels of physical activity,” the researchers wrote.
They acknowledged that relying on self-reported levels of physical activity was a limitation of their study. However, they also pointed out that previous research suggested that simplified physical activity questionnaires that took a dichotomous approach to activity/inactivity were effective at identifying the most physically inactivity individuals in a population.
“Continued evidence for adverse associations between physical inactivity and cancer endpoints substantiate a powerful public health message that any amount of regular activity appears to associate with decreased cancer risk,” they wrote.
One researcher was supported by the New York State Department of Health. No conflicts of interest were reported.
SOURCE: Etter JL et al. Leuk Res. 2018 Mar 27;69:7-11.
A lifetime of physical inactivity could significantly increase the risk of developing both Hodgkin and non-Hodgkin lymphoma, according to a case-control study.
Researchers examined self-reported lifetime physical activity in 87 patients with Hodgkin lymphoma and 236 patients with non-Hodgkin lymphoma, as well as 1,300 cancer-free controls.
Researchers also found a nearly threefold higher risk of Hodgkin lymphoma among overweight and obese individuals who were physically inactive, compared with those who were active (odds ratio, 2.79; P = .01). Similarly, physically inactive individuals who had never smoked had a greater than threefold increase in risk, compared with never-smokers who were active (OR, 3.30; P less than .001). But despite these significant associations for smoking and weight, the small samples sizes meant they were not significant in multivariable-adjusted models, the researchers noted. For non-Hodgkin lymphoma, the associations between obesity/overweight and smoking status were also not statistically significant in multivariable-adjusted models.
Previous studies looking at the role of physical activity in Hodgkin and non-Hodgkin lymphoma had yielded mixed and inconclusive results. Since then, researchers have begun to specifically consider the role of physical inactivity, rather than physical activity, as the exposure of interest.
“An additional advantage of identifying inactivity as the exposure of interest is that a body of literature suggests that those who are at the lower end of the physical activity continuum are less likely to overreport physical activity than those who engage in greater levels of physical activity,” the researchers wrote.
They acknowledged that relying on self-reported levels of physical activity was a limitation of their study. However, they also pointed out that previous research suggested that simplified physical activity questionnaires that took a dichotomous approach to activity/inactivity were effective at identifying the most physically inactivity individuals in a population.
“Continued evidence for adverse associations between physical inactivity and cancer endpoints substantiate a powerful public health message that any amount of regular activity appears to associate with decreased cancer risk,” they wrote.
One researcher was supported by the New York State Department of Health. No conflicts of interest were reported.
SOURCE: Etter JL et al. Leuk Res. 2018 Mar 27;69:7-11.
A lifetime of physical inactivity could significantly increase the risk of developing both Hodgkin and non-Hodgkin lymphoma, according to a case-control study.
Researchers examined self-reported lifetime physical activity in 87 patients with Hodgkin lymphoma and 236 patients with non-Hodgkin lymphoma, as well as 1,300 cancer-free controls.
Researchers also found a nearly threefold higher risk of Hodgkin lymphoma among overweight and obese individuals who were physically inactive, compared with those who were active (odds ratio, 2.79; P = .01). Similarly, physically inactive individuals who had never smoked had a greater than threefold increase in risk, compared with never-smokers who were active (OR, 3.30; P less than .001). But despite these significant associations for smoking and weight, the small samples sizes meant they were not significant in multivariable-adjusted models, the researchers noted. For non-Hodgkin lymphoma, the associations between obesity/overweight and smoking status were also not statistically significant in multivariable-adjusted models.
Previous studies looking at the role of physical activity in Hodgkin and non-Hodgkin lymphoma had yielded mixed and inconclusive results. Since then, researchers have begun to specifically consider the role of physical inactivity, rather than physical activity, as the exposure of interest.
“An additional advantage of identifying inactivity as the exposure of interest is that a body of literature suggests that those who are at the lower end of the physical activity continuum are less likely to overreport physical activity than those who engage in greater levels of physical activity,” the researchers wrote.
They acknowledged that relying on self-reported levels of physical activity was a limitation of their study. However, they also pointed out that previous research suggested that simplified physical activity questionnaires that took a dichotomous approach to activity/inactivity were effective at identifying the most physically inactivity individuals in a population.
“Continued evidence for adverse associations between physical inactivity and cancer endpoints substantiate a powerful public health message that any amount of regular activity appears to associate with decreased cancer risk,” they wrote.
One researcher was supported by the New York State Department of Health. No conflicts of interest were reported.
SOURCE: Etter JL et al. Leuk Res. 2018 Mar 27;69:7-11.
FROM LEUKEMIA RESEARCH
Key clinical point:
Major finding: A lifetime of physical inactivity is associated with a 90% increased risk of Hodgkin lymphoma and a 35% increased risk of non-Hodgkin lymphoma.Study details: A case-control study in 323 patients with Hodgkin or non-Hodgkin lymphoma and 1,300 cancer-free controls.
Disclosures: One researcher was supported by the New York State Department of Health. No conflicts of interest were declared.
Source: Etter JL et al. Leuk Res. 2018 Mar 27;69:7-11.