Scientists found something surprising about the real paleo diet

It turns out that instead of just steak — rare as possible, please — the real paleo diet may have been more of a steak-and-potatoes affair. In a paper in the September issue of The Quarterly Review of Biology, the authors argue that carbohydrates, especially from tubers (starchy plants like potatoes), were a key source of nutrients that may have helped us develop our particularly large brains. That's right: carbs, in a paleo diet. The key to this argument is some genetic detective work that...