America didn't just wake up one day and say "let's all get lazy and fat!" As I have written many times on this blog, there are other factors besides those who want to lay it all only on the "personal responsibility" focus. I believe we are being fattened up by design and for profit. Cheap food lacking everything but the calories and fats and sugar also is helping. If you get time, look at some old retro pictures, notice how people in general were far thinner, and even shaped different. One thing I have noticed is central obesity seems to be worse problem--that probably is due to the stress-cortisol factors. I don't know why size acceptance people deny there is an obesity epidemic. My memories of the old days, was of people being far smaller.