Oatmeal and Walnuts

A simple way to slim down: Eat the rough stuff. Simply adding more fiber to your diet can lead to weight loss. That’s because your body can’t break down fiber, so it slows down digestion and takes up space in your stomach. With 4 grams of fiber per cup, oatmeal can be a good source. Walnuts can add about another 2 grams, plus satisfying protein and crunch.