The following foods are the lowest in calorie density. Suppose you eat fruits, vegetables, high-fiber carbs, and cooked grains. In that case, you will fill up on fewer calories than if your diet consists of low-fiber, high-fat, and high-sugar foods like pizza, burgers, french fries, cinnamon rolls, candy bars, potato chips, cookies, and many other American favorites.Think salads, fruit, low-fat pasta, low-fat stir fry, baked low-fat seafood, chicken, rice, and oatmeal. It is still necessary to be aware of not stuffing yourself, but you do not need to go hungry and skip meals.