Severe obesity is on the rise in the US

Obesity is high and holding steady in the U.S. About 4 in 10 Americans have obesity overall and about 1 in 10 have severe obesity. That's according to new government research. The overall rate has not changed significantly in the past decade, even as the rate of severe obesity is increasing. That means it's too soon to know whether new treatments for obesity can ease the epidemic of the chronic disease linked to dozens of health problems. Experts say preventing obesity in the first place is key, starting in early childhood.