Part 1 of The History of Dieting and Fitness, first up is Weight Watchers-Sunday's with Dr. Susan Kleiner

Susan and I were talking the other day and thought it might be interesting to talk about how we got here with dieting. First up is Weight Watchers, the early days. The problems they were trying to solve, their evolution and what we know about that experiment. No single company has been scrutinized the way Weight Watchers has, here is what we know.