Be sure to have a dialogue with your parents and siblings regarding your family history. My dad has a history of polyps, starting around 40. It's not something I would have known about without talking to him as it's just a regular part of his life to get them removed every few years. I had my first colonoscopy last year at 45 and had a polyp removed. If I didn't know my family history, I might have waited until the normal age of 50 and it might have been too late.