But it's really slow, some new traits are lactas in adult age, gluten tolerance, but rerouting your entire metabolism is something altogether. Besides optimising from evolutions point of view (e.i. maximise reproduction) is not the same as optimising from most peoples point of view (e.g. living longer, being healthy past middle age).
I recently came out against paleo in the open thread, and realized that I probably haven't yet heard the strongest arguments in favor of a paleo diet. So, what are said arguments?
EDIT: Or more generally, why should I eat less carbohydrates and more protein / fat?