How long is a piece of string

A simple piece of string is a better predictor of cardiovascular risk than BMI, say researchers.

The idea is to use a piece as long as the patient’s height, fold it in in half, and check that it fits around the waist. It if does’t fit, CVD risk is increased.

It’s just as good as a tape measure, says researcher Dr Margaret Ashwell from Oxford Brookes University in the UK.

“This assessment is clearly ideal for primary stage screening for large populations

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