Recognizing and treating obesity

Dr. Fatima Cody Stanford: Throw WILLPOWER out the window. My last patient that I saw today was a young woman who's 39 who struggles with severe obesity. She's been working out 5 to 6 times a week, consistently. She's eating very little. Her brain is defending a certain set point.

A set point, says Dr. Stanford, is a range of weight your brain is in charge of maintaining by controlling how much food you eat and how much of it you store. One theory is that it's an evolutionary survival mechanism that helped retain fat during famines.