As parents are fond of noting, maybe you shouldn’t jump off a cliff just because all of your friends are doing so, but if you have pals that are seeing results from joining a weight loss program, you might want to join them. Not in the cliff-jumping, Weight Watchers or something like it. A new study says people in such programs are often just as successful or more so than people who only rely on medical advice from a doctor to lose weight. [More]