When asked about religion and politics, Mark Twain is rumored to have said, “I am quite sure now that often, very often, in matters concerning religion and politics a man's reasoning powers are not above the monkey's.” In recent years, a third topic appears to be competing for the dubious honor of “things-you-don’t-bring-up-at-dinner-parties”: diet. The Internet wars waged over diet are quite spectacular, with each side arming themselves with the latest cherry-picked data to hurl at their opponents. Discussions about diet have taken on the ideological fervor of the Salem Witch Trials. Disagree with the consensus opinion, and you will quickly be labeled a heretic and burned at the stake!