Pleistocene Diets

Would we be healthier if we ate more like our ancient ancestors? What you need to know

It seems as if every six months there's a new crop of diet books peddling a new weight-loss gimmick. The latest are the so-called Pleistocene diets that exhort us to eat as a caveman (or woman) did in order to live a long and healthy life. The idea is that humans didn't evolve on French fries and ice cream. Instead, survival during our formative years was fueled by eating more meat, which allowed our early ancestors' brains to get bigger than those of other primates. So forget the pasta, and load up on roast beef, these books urge. Your body will...

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