Dieters have long believed that drinking water can aid weight loss by filling the stomach and reducing one’s appetite. Now the literature — including a study published last year in the journal Obesity — is starting to back that theory up. On the heels of earlier research, scientists at Virginia Tech had a group of overweight subjects try a low-calorie diet for 12 weeks. Half the group was told to drink two glasses of water before every meal. At the end of the 12-week period, that half had lost an average of nearly 16 pounds. The half that didn’t drink water? An average of 11 pounds. It’s hard to argue that water before every meal could be a bad thing, so if you’re looking to shed a few unwanted pounds after the holidays, a little H2O may just do the trick.