See...to a point I DO believe the set point theory, I can't tell you how many times I returned to exactly the same weight regardless of behavior....until I abused it enough to shift setpoint. But my set point crept up about 10 lbs every 3-4 years--I dont buy that is all "genetics". Yes maybe I am predisposed to be on the higher end of healthy, maybe even slightly overweight....but I do NOT believe that I was supposed to be obese.
It bothers me that she is making the comparison with height in a way that indicates that our "natural obesity" might be an ideal state and what nature intended. I just dont think evolution EVER foresaw an environment of limitless refined chemically enhanced non food product.
Even just the studies that have indicated that refined carbohydrates may lead to more belly fat which is tied in to poorer health show that WHATEVER genetics intended, it sure didnt see coke and twinkies coming.