""Forbidden Food"" contains the news about diet you've always wanted to hear, but may have trouble believing. John Sloan, a medical doctor who loves to eat, has spent several years combing the scientific literature on healthy eating and now reveals what he found: next to nothing! Everything we seem to believe about salt, sugar, fat, fiber, antioxidants, etc., is based on science so thin and shabby that nobody with a healthy sense of proportion should be paying any attention to it. What has happened? Dr. Sloan speculates about why humans need to believe in food ideology. But the bottom line of