The BBC on the recent University College London study on 5,000 twins (identical and fraternal) that demonstrates that “Obesity ‘may be largely genetic’”.

Additionally, Junkfood Science has a very well written summary of a seminal 1940’s study on starvation and physiological/psychological responses to starvation, as well as what happens when starvation is remedied and folks’ eating habits adjust. In fact, there seems to be very little cause to say that folks who eat a lot after going on starvation diets are “overeating”, and apparently body weights return to almost the same as before starvation within 9 months of returning to a situation where access to food is unfettered.