Natural Diets and Weight Loss

In view of the fact that starvation was a much bigger danger than obesity for most of human existence, you would expect the diets humans had evolved for to be those that put weight on and kept it on. If the nuts and berries that apes eat is the natural diet, that will cause weight gain. If the meat and vegetables that paleolithic man ate (according to some theories) is the natural diet, that will cause weight gain. If the grains and beans diet common in the agricultural era is the natural diet, that will cause weight gain.

The questions of what diet is natural and what diet will keep you thin are interesting and important but they are NOT the same question.