Weight Watchers consistently ranks as #1 best weight-loss diet by Consumer Reports and U.S. News. Weight Watchers has been experimentally validated with modest outcomes. In a two year study published in JAMA, Weight Watchers participants lost 9 pounds in the first year, which settled into 3 pounds by the end of year two. Weight Watchers works for weight loss because you keep food records and count “Points” (a simplified calorie counting system.) Their weekly meetings and online community is very motivating to many. Weight Watchers consistently ranks as #1 best weight-loss diet in Consumer Reports and by U.S. News & World. Still, Weight Watchers is no guarantee of a balanced diet and fitness regimen and freedom from binge-eating. The program is only as good as you work it.