Members of the online community Track Your Plaque get advice from a doctor and each other on how to cook low carb meals. iStockphoto.com hide caption

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Vlad Averbukh, 29, a follower of the paleo diet, eats raw meat along the Hudson River in New York in 2010. (Averbukh did not weigh in on our blog post on the paleo diet.) Emmanuel Dunand/AFP/Getty Images hide caption

itoggle caption Emmanuel Dunand/AFP/Getty Images