15 Healthy Foods That Help You PoopApples. Apples are a good source of fiber, with one small apple (5.3 ounces or 149 grams) providing 3.6 grams of fiber ( 2 ). Prunes. Prunes are often used as a natural laxative — and for good reason. Kiwi. Flax seeds. Pears. Beans. Rhubarb. Artichokes.