Just read an article in the Chronicle about a study that shows eating more fruits and vegetables doesn't reduce the risk of breast cancer returning. "The results weren't what researchers had expected or hoped for," says the article, which goes to show how easy it is to fall into the "more is better" fallacy. Five servings of fruits and vegetables are good for you; more must be even better!
Call me crazy, but I simply think eating a variety of healthy foods with a goodly amount of fruits and vegetables is really all that is called for. Not that I do it, mind you. But I'm not sure it's all that complicated. Not really a news flash either.