Well, I haven't had to have a colonoscopy
yet, my wife is constantly reminding me that I am old enough that I need to have a prostate exam. At 35, I really should, especially since my grandfather had prostate cancer.
Thus far, the only real procedure that I've had done (knock on wood), was to dilate a
Schatzki ring in my esophagus that resulted in difficulty swallowing. Fortunately, I
was sedated for it.