I had a clean colonoscopy at age 45. no polyps etc. just turned 50 and wondering if i should do it now, or is it ok to wait. thanks in advance, ?

OK to wait if...: No symptoms (eg. Bleeding, unexplained weight loss, change in bm's), not in a high risk group (eg. Family history of colon neoplasia, ibd, immunosuppressed). Ask the doc who did your last one if you are in doubt.

Maybe: First question is do you have any symptoms to suggest colon disease. Change in bowel habits, rectal bleeding, unexplained weight loss most commonly. If not, next question is family history. Any one in your first degree family have colon cancer or polyps? If yes then have one at 5 years, if no then recommendations are to wait 10 years, again, if no symptoms.