This evidence-based channel was developed by expert physicians to help you learn about a variety of topics patients have about colonoscopy and related areas of interest, such as colon anatomy, bowel prep medications, dietary restrictions, screening practices and risk factors for colorectal cancer, and what to talk about with your doctor before having a colonoscopy. We hope this resource will be useful to you, but it is not a substitute for the medical advice of your doctor. If you are thinking about having a colonoscopy, please speak with your doctor so you can get the information you need.