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Waist Size Helps Predict Heart Risk in Teenagers
New York Times

Using waist measurements together with body mass index may better predict a teenager’s cardiovascular risk than using B.M.I. alone, a new study finds. Pediatricians and medical groups routinely use B.M.I. as a measure of unhealthy weight in children. But the index, calculated by dividing one’s weight in kilograms by the square of one’s height in meters, cannot differentiate between fatty and lean tissue. So an athletic, muscular teen could be classified as overweight or obese using B.M.I. alone.