Meanwhile, the 10 to 12 percent body fat guy is in constant flux—some weeks he’s at 9 percent body fat, others he’s at 12 percent body fat. More in Health ...

New University of Florida study finds body fat percentage is 78% more accurate than body mass index in predicting mortality risk, challenging the long-standing use of BMI as a health indicator.

Share on Pinterest Compared to BMI scores, body-fat percentages were a stronger predictor of the 15-year mortality risk of young adults, a new study found. Thana Prasongsin/Getty Images ...