Tuesday, 7 July 2009

The lie that is BMI

http://www.npr.org/templates/story/story.php?storyId=106268439&sc=fb&cc=fp

Having worked for a few years in obesity / cardiovascular biology and also struggling with my own weight and health, I came to the conclusion many years ago that the Body Mass Index was a big ball of dung. For the life of me I couldn't get to a BMI of less than 27 - it became an obsession - even though I was dieting, exercising and doing everything right. But the article I've linked to points out very succinctly that the BMI does not take into account tissue content. Bone and muscle all contribute and therefore should be adjusted for.

Why, in that case, have doctors failed to dismiss the BMI in favour of something like impedance or DEXA to measure body content combined with serum cholesterol and blood pressure? Maybe this is what they're doing, but every clinic I walk into STILL has that damn BMI chart. Burn them! Burn them all!

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