Whether the latest diet fad involves no carbs, low fat, grapefruit and cabbage soup, or all beef all the time, the way to lose weight really boils down to the same thing: Eat less and exercise more. So why do people shell out good money for diet books, adding new ones every year to best-seller lists? NPR’s Lynn Neary explores the phenomenon. LYNN NEARY: Maria Langer, a freelance writer and commercial helicopter pilot, seems like the kind of person who is nobody’s fool. But she admits over the years; she’s forked over more than a few dollars on the latest diet book.
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