C is for Cookie
We like the sound of any diet that involves eating cookies and promises you'll lose 15 pounds in a month. Sanford Siegal, M.D., is the creator of the Cookie Diet in which followers eat six of his specially formulated cookies along with one meal a day. It's not surprising people lose weight on this diet, considering they're eating a mere 800 calories a day -- a calorie count so low that experts would classify this as a crash diet that is not sustainable. We classify it as just plain crazy.