Our body breaks down dietary fats, proteins, and carbohydrates. Dietary fibers, however — which comes only from plant foods — passes through the digestive system virtually intact. A diet rich in fiber does more than to keep you regular. A high-fiber diet also helps stabilize blood sugar, which helps control diabetes and lowers “bad” LDL cholesterol, reducing the risk of heart disease. A high-fiber diet can also help lose weight by preventing overeating. High-fiber diets have a low energy density, which means that one can consume a larger portion with a lower number of calories