It is a personal choice, one you must weigh for yourself. Radiation is a real threat but then again so is breast cancer. You pick what is right for you but don't skip on discomfort alone or being nervous.

My original comment was more from personal bitterness that a member of my husband's family constantly tells anyone who will listen that she does not think anyone should have a colonoscopy and doesn't blame anyone for not having one. My father didn't want to do the prep until at 52 he starting passing blood. They found stage 3 cancer they could have caught at stage 1 if he had done the screen at 50 as recommended. Instead he now must get to a bathroom at the urge because they removed a larger portion of his colon. He had 6 months of chemo making the summer of 2006 horrible. He has a colonoscopy every year and I must have one 10 years earlier than I normal person. I try to respect my husband's family member but her reason is rooted in selfishness, she doesn't like the prep. No fact, she thought triggering diahrea in herself for a test was unfair and unjust. I cannot support this and never will no matter how much she thinks I should.