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If you’re age 45 or older, your doctor may have already talked to you about the need to start getting a colonoscopy to check for polyps.  

But what are colon polyps? Who gets them? And why do they need to be removed? We checked in with gastroenterologist David Richards, M.D. 

I usually describe it as a little growth that develops in the lining of the large intestine, or colon. &...