human
My doctor said I should get a colonoscopy, but I've heard that they aren't safe.
assistant
Colonoscopy is generally considered to be the most accurate method for detecting cancer of the large intestine. However, it is not without risks and there are other methods of screening for colorectal cancer. You can find more information about this on the American Cancer Society website at https://www.cancer.org/cancer/colon-rectal-cancer/screening-tests/colorectal-cancer-screening.