In a few days, the world's population will reach 7 billion. Only a tiny fraction of this number still makes a living by hunting and gathering, the way all our ancestors did before about 12,000 years ago.
According to a set of claims relentlessly pushed in some books and blogs, as many modern humans as possible should adopt a hunter-gatherer diet. That is, we should eat lean meat and vegetables because our Paleolithic hunting-and-gathering ancestors did. At the same time, we should refuse dairy, grains and sugars because our hunting-and-gathering ancestors didn't eat these items.
But, of course, there is no scientific evidence of such a "typical" diet and, in all events, do we want to go back to the life expectancy of 20 years that these people experienced? I don't think so.
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