A colonoscopy is a gold standard for colorectal cancer screening. The procedure entails doing a “prep,” which helps empty the bowels completely for accurate viewing. During a colonoscopy, the doctor uses a lighted, flexible instrument to view the rectum and colon, and check for abnormalities that may point to cancer. Precancerous polyps can also be removed during a colonoscopy. One of the most frequently asked questions about a colonoscopy is how often it should be performed, and the answer ... [Read More]