human
My doctor says that I need to get a colonoscopy. What does that mean and how often do I need to do it?
assistant
A colonoscopy is a procedure in which a doctor uses an endoscope to examine the inside of your colon. It is used to detect polyps, cancers, and other problems with the colon. The frequency of colonoscopies depends on your age and medical history. Generally, adults should have their first colonoscopy at age 50 or earlier if they have a family history of certain types of cancer. You may also need a colonoscopy if you have symptoms such as constipation, diarrhea, bloating, or abdominal pain.