A colonoscopy is an investigative procedure recommended by a gastroenterologist to ascertain any (suspected) abnormalities in the large intestine and rectum. One may be asked to go in for a colonoscopy if he/she has chronic constipation or diarrhoea, abdominal pains, or rectal bleeds. The patient will be asked to undergo a bowel cleanse and abstain from consuming solid foods to prepare for the procedure. During the colonoscopy a long and flexible tube is inserted into the rectum. This scope is fitted with a camera and moves through the entire colon. The doctor may choose to take samples of any polyps present or even remove them during the course of the procedure. The patient may opt for sedation to help through the procedure that lasts between 30 – 45 minutes. Colonoscopy is recommended once in 5 years for those who are above 50 years old and have risk factors for colon cancer.