http://nymag.com/scienceofus/2015/1...k.html#jumpLink

Oprah’s Investment in Weight Watchers Was Smart Because the Program Doesn’t Work



One section from article

..."In fact, those same studies found that only Weight Watchers participants reliably lost more weight than people in control groups who were not enrolled in a diet program at all. At first glance, Weight Watchers works.

But the truth is a bit more complicated: Winfrey’s venture is, in fact, a brilliant investment, although not necessarily for the reason she thinks. It’s brilliant not because Weight Watchers works but because it doesn’t. It’s the perfect business model. People give Weight Watchers the credit when they lose weight. Then they regain the weight and blame themselves. This sets them up to join Weight Watchers all over again, and they do."....