Forget every carb-cutting, craving-canceling trick you know. We combed through the latest diet research for the skinny on skinny.1. OLD RULE: CUT CARBSWhy you should break it: Low-carb diets reigned during the Atkins craze, but in the long run, people can't maintain them. According to a study in the Annals of Internal Medicine, dieters who ate carbs in moderation lost about five pounds more than carb-avoiders.New rule: Eat five servings of grains daily, especially whole ones (oatmeal, brown rice), says Dr. ...