With the development of the economy, the variety and number of foods consumed by people are increasing. With the westernization of eating habits, the consumption of meat, fast food and various processed foods has skyrocketed, resulting in an increasing incidence of colorectal diseases. What is the best way to quickly and accurately detect colorectal diseases? The answer is colonoscopy. However, there are still a few people who are prejudiced against colonoscopy and are reluctant to undergo colonoscopy. What are the conditions that require colonoscopy? Colonoscopy is an examination method in which a 12mm diameter endoscope is inserted through the anus to the ileocecal valve at the end of the ileum, and the conditions inside the intestine are carefully observed. What are the conditions that require colonoscopy? 1.Adults who have never undergone colonoscopy and are over 40 years old 2.Long and thin stool or discomfort after defecation 3.Blood in stool or abnormal discharge in feces 4.Positive fecal occult blood test 5.Continuous constipation, diarrhea or abdominal pain, abnormal bowel habits 6.Patients with bowel cancer in their immediate family 7.Patients who have undergone surgery for bowel cancer 8.After removal of intestinal polyps 9.Patients in their immediate family with family history of multiple adenocarcinoma (FAP) Many people are reluctant to undergo colonoscopy, not because of the intense pain associated with the procedure, but because the oral colon cleanser they have to take before the colonoscopy is really unpleasant to drink. This is justifiable, as taking 3-4 liters of cleanser is enough to make you run to the bathroom overnight, which is a chore. Although justifiable, we look at the problem from another perspective, you only need to spend one night to effectively prevent the occurrence of bowel cancer. And humanized today, manufacturers have developed various flavors of cleansers, there is always one for you. Thirdly, do you have a choice barrier? Nowadays, the anesthesia of colonoscopy is commonly divided into general anesthesia colonoscopy and local anesthesia colonoscopy. Local anesthesia for colonoscopy is inexpensive and allows you to enjoy the view of the intestines on the way to do the colonoscopy and adjust your posture according to the doctor’s instructions when you encounter obstacles in entering the mirror. General anesthesia colonoscopy, on the other hand, does away with pain and discomfort, and the doctor can operate calmly, trying to achieve the farthest distance that the mirror can reach, and sleep while undergoing the colonoscopy, often waking up complaining of a beautiful dream without knowing that the colonoscopy has been done. Which one will you choose? Fourth, polyps do not necessarily be put away at once “What, polyps are not removed cleanly?” Many people complain like this. But removing a polyp is also a surgery. Sometimes because the patient is taking medications or has abnormal blood clotting, we certainly have to remove them electively in a responsible manner for the patient. Sometimes polyps are postponed because the patient has multiple polyps or has problems with the location or size of the polyps.