Can Your BMI Predict How Long You'll Live?

Body mass index (BMI) is a common measure of body fat, but new research shows that having a BMI in the "normal weight" range is not always the healthiest for every person. In fact, for many people, having a BMI in the overweight range may be linked with the lowest risk of dying over a 13-year period, the research suggests. Usually, a BMI below 18.5 is considered underweight, from 18.5 to 24.9 is considered normal weight, from 25 to 29.9 is considered overweight, and 30 and over is considered obe