I need to know what is the point of getting a colonoscopy?

It is a way to look: It is a way to look inside the colon(large bowel). It is commonly done to screen for early detection of colon cancer and is recommended to be done in all 50 year olds. During the procedure we look for any polyps and remove them when found) and take a biopsy of any diseased are to make a diagnosis of the suspected condition.

See below: The primary point is screening for colon and rectal cancer. Most colon and rectal cancers start as polyps. If polyps are found at colonoscopy they are removed. This is good preventative medicine. Other pathologies that can be identified include but are not limited to diverticulosis, ulcerative colitis, Crohn disease and various forms of infectious or ischemic colitis.