Walnuts and other plant-based foods have natural fiber which occurs in the cell walls. Although walnuts contain mostly dietary fiber which cannot be digested and has no vitamins or calories, it is still extremely important in order to stay healthy as a whole. Dietary fiber can help with softening stool as well as doing a number of other important things which you may not even realize.
You will find that walnuts are a good source of insoluble fiber as well, which is a kind of fiber that does not dissolve in water. Just one cup of chopped walnuts contains a total of 7.8 grams of dietary fiber, which is a fairly significant amount. A daily amount of 38 grams of fiber is recommended for men and 25 grams is fiber for women. Walnuts play a very important role in keeping us healthy, fighting off high cholesterol, and even controlling blood pressure if it is consumed in large amounts on a regular basis.