I had 10 inches of my colon removed in 2000 due to this. Woke up at 2am in pain and throwing up, looked so bad the DW took me to the ER. Had never had symptoms other than diarrhea which was attributed to lactose intolerance. After the surgery and about 5 weeks recovery I felt fine. I was given a booklet listing all the things not to eat. Four years ago had a checkup and colonoscopy and the Dr. Informed me that the "protocols" for treatment had changed and to go ahead and eat pretty much whatever I wanted in moderation and I'm still doing fine.