First popularized in the 1970s, the Paleo Diet asks people to follow a diet similar to those who lived during the Paleolithic era, between 2.6 million and 10,000 years ago. This means eating like hunters and gathers -- consuming lots of produce and animal protein, while avoiding sugar, grains, legumes and dairy altogether.
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Followers of the Paleo Diet may go prehistoric on U.S. News & World Report this week.