Colon cancer is the third most common form of cancer and the second leading cause of cancer deaths in the world. It is not easy to detect it early on because the symptoms are vague -- bleeding, weight loss and fatigue. It is only when the tumor has grown to a large size that bowel habits change. The best way to avoid it is to keep our colon clean and healthy. How? Eat healthy foods and increase your fiber intake. Doing a colon cleanse at least once or twice a year can effectively remove toxins to make your colon function properly. You can either do it naturally or through medication, it is totally up to you. What's important is to keep it clean and healthy.