Mike the Psych's Blog

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More evidence that bmi is past its sell-by date

I’ve posted on this previously but there’s more research out that suggests that waist-height ratios are a more reliable health indicator than bmi.

bmi doesn’t differentiate between fat and muscle and distorts the results for very short and very tall people.

The danger levels are as follows (for men and women of average fitness):

5′ tall? waist no more than 35.25″

5′ 3″ tall? waist should be no more than 36″

5′ 6″ tall? waist shouldn’t be more than 37.25″

5′ 9″ tall? waist no more than 38″

6′ tall? waist should be less than 38.5″

6′ 3″ tall? waist shouldn’t be more than 39.5″

A 40-year study in Copenhagen published in 2016 found that people with bmi’s of 27 lived the longest – although they were technically overweight.

And a study in Sweden published in 2009 found that women with an extra 4″ of fat round the waist were 15% more likely to die from heart failure despite being of “normal” weight.

It’s because belly fat is more dangerous to health than subcutaneous fat as it surrounds more vital organs. See post on body shape.

Here’s one of many waist-height ratio calculators you can try.

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Author: mikethepsych

He says he's a psychologist but aren't we all?

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