I got diverticulosis with the rsd. The docs don't think they're related but my guess is that it was caused by the constipation resulting from the drugs. If I strain much then diverticulitis seems to result. It's nasty and means I go in the hospital and/or don't eat for three or four days.

You're right that natural means are best but it might a good idea to be certain you're getting the job done no matter what.