"Is chocolate heart-healthy? Does yogurt prevent type 2 diabetes? Do pomegranates help cheat death? News accounts bombard us with such amazing claims, report them as science, and influence what we eat. Yet, as Marion Nestle explains, these studies are more about marketing than science; they are often paid for by companies that sell those foods. Whether it's a Coca-Cola-backed study hailing light exercise as a calorie neutralizer, or blueberry-sponsored...