The Gall of Flab

If your belly keeps making a comeback, you may be gaining more than a few pounds: University of Kentucky researchers recently found that men who yo-yo diet are 76% more likely to develop galls tones than those who maintain consistent weight. In fact, the more frequent and severe your body-weight swings, the greater your risk. The scientists aren't sure why weight cycling causes gallstone formation but note that it was specifically related to fluctuating fat levels.