Being too fat can shorten your life, but being too skinny may cut longevity as well, a new study suggests.

Using data on almost 1.5 million white adults culled from 19 separate analyses, researchers from the U.S. National Institutes of Health NIH found that 5 percent of the U.S. population can be classified as morbidly obese — a number five times higher than previously thought.

Obesity Can Shorten Life, Analysis Finds – US News and World Report