Foods rich in fiber should be consumed in high amount to cleanse the colon of the harmful toxins. Fiber will help to keep the stools soft and improve the bowel movement which ultimately encourages the body to expel waste products. At the same time fiber enriched foods will also help to get rid of any kind of intestinal problems. You can add a lot of fiber into your diet by eating fresh fruits like raspberries, pears and apples, as well as fresh vegetables like artichokes, peas and broccoli. Cereals, whole grains, nuts, beans and seeds also contain a good amount of fiber.