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Homer talks about the vegetarians in ancient Greece. Leonardo da Vinci reportedly abstained from meat, as did 19th-century poet Percy Bysshe Shelley. Throughout history there have been small groups of people arguing against eating meat, largely for ethical reasons.
Today’s equivalents are nutrition experts – and they increasingly have data on their side.
Although researchers disagree about exactly how much meat is OK to eat, most agree that less is better.
Research consistently shows that regularly dining on red meat, pork, or cured meats is bad for the heart and increases the risk of colon cancer. The studies aren’t clear, however, on how much meat causes problems, or how liberally we can include chicken or fish in our diets.