Devices that analyze bioelectrical impedance (such as the one shown above) can help measure body fat percentage, serving as an alternative to body mass index. (Image credit: ZeynepKaya Getty Images)
Body mass index (BMI) is a rough estimate of body composition that is widely used to assess the risk of negative health outcomes, including premature death. However, BMI is an unreliable indicator that does not actually predict the risk of death, new research shows.
A study published June 24 in the Annals of Family Medicine found that BMI does not reliably predict the risk of dying from any cause. Instead, body fat percentage, an alternative measure of body composition, was significantly more accurate, showing a clear link to the risk of dying in people.
“Ultimately, the current definition of obesity should be changed to be based on percentage of body fat,” said senior study author Dr. Frank Orlando, medical director of UF Health's division of family medicine.
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Sourse: www.livescience.com
