The American Cancer Society recommends that all Americans age 50 and over be screened for colon cancer even if they feel fine. People with a history of colon cancer or colonic polyps in their family may need to be screened at a younger age. In addition, anyone having symptoms such as rectal bleeding, abdominal pain, constipation, diarrhea or weight loss may need to be checked before age 50.
Most colon cancers develop from benign non-cancerous growths called polyps.
By undergoing a test called colonoscopy, polyps can be removed before they develop into a cancer. In this manner, colon cancer can be prevented. Colonoscopy is an outpatient procedure. Sedation is given during the procedure so most people report minimal or no discomfort during the procedure.