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Author Michael Pollan discusses his latest book, In Defense of Food: An Eater's Manifesto. He boils his philosophy of nutrition down to seven words: "Eat food. Not too much. Mostly plants."
Pollan suggests that people can improve their health by following relatively simple rules, such as: "Don't eat anything that your great-grandmother would not recognize as food."
Pollan discusses his definition of "real" food, and explains why he recommends staying away from what he calls the "foodlike substances" that line grocery store shelves.
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