Colon Cancer Support Group
Colorectal cancer, also called colon cancer or bowel cancer, includes cancerous growths in the colon, rectum and appendix. Many colorectal cancers are thought to arise from mushroom-like growths that are usually benign, but some may develop into cancer over time. The majority of the time, the diagnosis of localized colon cancer is through colonoscopy.

This is the MOST important thing. My doctors told me to take a fiber product like Metamulcil to help absorb the water. Someone here - I think it was Coogee - recommended Psyllium from a health food store, which is the same thing and much cheaper. I took it daily for a year. After first your body has to get used to it, but after you take it regularly for a week or so it works like a charm.