Scientific American has (another) article up criticizing the paleo diet:
How to Really Eat Like a Hunter-Gatherer: Why the Paleo Diet Is Half-Baked
Ferris Jabr, Scientific American, June 3, 2013
We are not biologically identical to our Paleolithic predecessors, nor do we have access to the foods they ate. And deducing dietary guidelines from modern foraging societies is difficult because they vary so much by geography, season and opportunity
While this article is insightful, it overlooks the racial differences in adaptation to carbs. Some groups (e.g. Europeans and North Asians) have been in agriculture and eating carbs for roughly 10,000 years, while other groups (e.g. Africans and Amerindians) were engaged in hunter-gatherer lifestyles until fairly recently (in evolutionary terms). As Cochran & Harpending and others have pointed out, various human groups have undergone immense selection pressure (often correlated with continental races) over the past 10,000 years.
A question for paleo dieters: Since I’m of European ancestry, and since my ancestors have been eating carbs for roughly 10,000 years and seem to be adapted to eating carbs, why would I want to switch to the paleo diet?
I don’t have the numbers in front of me, but staple carb crops like wheat and rice and produce overwhelmingly more calories per acre than can hunter-gatherer diets. Obviously, it wouldn’t be sustainable for most people in the world to be on the paleo diet. It would be a strange irony if those who seem more adapted to eating carbs (like Europeans) were to switch to a paleo diet, while those less adapted (e.g. many in the Third World) were forced to eat carbs.