If they rip your colon, you will have blood in your bowel then it will repair, if you don't die. They can go ahead and do surgery to repair it.
The complications stats that I found on the internet are 1.6% to 3.8%, with some other factors it is higher, like preexisting conditions. Some places have greater risks.
I won't have one unless I need one. I eat lots and lots of roughage. That takes care of pollips and the things that it is looking for. It feels lousy, uncomfortable, the thing does feel like it scrapes here and there. The doctors are proud of their profession, and have good faith in the AMA. What would you expect of their opinions?
Red blood is from the butt. Dark or black blood from up in there.
When I think about it, these are about the same odds as having an encounter on the trail with someone who objects to another's naked body, or gives some hassle. The risk is greater, however with the medical procedure. If you don't coverup knee jerk at every encounter, you have the same odds. If you go for a colonoscopy, then why do you coverup, or even feel concerned about hiking naked?
Jbee