If I have a conversation with someone about a single study showing the protective effect of fruits and vegetables on heart disease, they may agree that it’s all very nice for fruits and vegetables, but they will probably still go home to meatloaf and gravy. It doesn’t matter how big the study, how persuasive the results, or how reputable the scientists who conducted the investigation. The fact is that most people have a healthy skepticism about one study standing alone—as well they should.
