Best Weight-Loss Diets

The best diet for losing weight is Weight Watchers, according to the experts who rated the diets below for U.S. News. Volumetrics and the vegan diet tied for No. 2 on this overall weight loss ranking list, which takes into account short-term and long-term weight loss scores. Some other diets performed as well or better in our rankings for enabling fast weight loss, but long-term weight loss is more important for your health.

Read the Best Diets methodology