There are many methods of colon cleansing including taking supplements, using colon hydrotherapy, fasting, taking laxatives, using enemas, and eating a healthy, high fiber diet. Although eating a healthy diet is the best colon cleansing method for anyone, you may be looking for fast results that require you to take a different approach. Some people use a fasting cleanse not just to clean their colon, but to drop weight in a hurry.