Monday, February 4, 2008

Another BMI Chart

Today in tutorial we were handed another BMI chart. That's either my third or fourth since starting medical school. I can't quite remember, partly since I throw them out right away... The claim was made in this tutorial that a BMI of 27.3 increases the risk for endometrial carcinoma. I was pretty skeptical. Flegal's 2007 JAMA paper shows that in the BMI 25-30 range the risks of "obesity-related cancers" are not significantly different from the BMI 20-25 range.

I don't have time to look into this carefully right now, but I'll try to check out the following article when I have some time.

Authors Full NameChang, Shih-Chen. Lacey, James V Jr. Brinton, Louise A. Hartge, Patricia. Adams, Kenneth. Mouw, Traci. Carroll, Leslie. Hollenbeck, Albert. Schatzkin, Arthur. Leitzmann, Michael F.
TitleLifetime weight history and endometrial cancer risk by type of menopausal hormone use in the NIH-AARP diet and health study.
SourceCancer Epidemiology, Biomarkers & Prevention. 16(4):723-30, 2007 Apr.
AbstractObesity and menopausal estrogen therapy are established risk factors for endometrial cancer. However, the joint effects of obesity and menopausal hormone therapy on endometrial cancer risk are incompletely understood. We addressed this issue in a cohort of 103,882 women ages 50 to 71 years at baseline in 1995 to 1996. During a median of 4.6 years, which contributed to a total of 455,304 person-years of follow-up through 2000, 677 cases of endometrial cancer were ascertained. (...)
Date of Publication2007 Apr

1 comment:

Lala said...

I'm so glad to have found your blog, as I am also in medical school, and find it extremely difficult to decide how exactly one is to practise good medicine when it comes to overweight and obesity. I am in first year, and we have already had practical classes on BMI and the risks of obesity. And at the same time I know there is a large body of evidence that shows this is all hogwash. So I don't know what to do. When I'm a Dr, how do I decide what to tell patients when I know that the rest of the medical establishment will tell them that fat=death sentence? Help! How do we do this?