My father was 47 when he had colon cancer. He had it removed and then had a year of chemo and after that he had a yearly colonoscopy, where they'd remove a polyp or two every so often - and a couple of times would nick him and he'd have to spend a couple days in the hospital.
I'm 43, so it's time for my first one. I'm not looking forward to it - and I'm looking forward even less to the clear liquid day preceding it.
It's in three weeks. I don't expect them to find anything.