"Basic foods that have proven health benefits are what we want to emphasize." says Steven Pratt, MD, author of SuperFoods Healthstyle. "For example, blueberries, broccoli and tomatoes have a large number of peer-reviewed published studies substantiating their health bent- fits. These foods are readily available, inexpensive and have other benefits, such as high fiber content. And they've been used for years, with m no drawbacks, side effects or toxicity; you're never going to see a headline that blucherries are had for you."