With so many diets and dieters, why are Americans collectively getting bigger? Science Friday discusses this growing concern in this episode.

National Public Radio talks with Dr. Walter Willett, Harvard MD and nutritionist, about changes that need to be made in the 1992 US Food Guide Pyramid. Interesting as an introduction to this topic, with links to related stories.

Science Friday talks with author Michael Pollan about his latest book, "In Defense of Food: An Eater's Manifesto." He suggests that people can improve their eating by following this simple rule: Don't eat anything that your...

National Public Radio considers public schools making money by signing contracts with soft drink companies and the parents who protest this action as a health risk for kids. They are joined by health professionals "Worried about a...

Author Jo Robinson digs up tips on how to get the most nutrition out of our fruits and vegetables. [22 mins. 47 secs.]