Aids Weight Control: With complex carbohydrates being the greatest source of fibers, it aids weight loss. Intake of a fibrous diet regulates the digestive system, the regular movement of bowels help you get rid of the toxins, unwanted wastes, and those accumulated fats around the waist. With fibrous foods in your diet, you never tend to overeat, but at the same time, you can linger longer and stay full with the intake of fewer calories than otherwise.