A colonoscopy may feel intimidating, but doctors say the procedure is one of the most important tools for detecting and preventing colorectal cancer. According to TIME, the American Cancer Society recommends that adults with average risk begin colorectal cancer screening at age 45, although some people may need testing earlier depending on symptoms, family history, or medical risk factors.
Doctors emphasize that colonoscopies do more than find cancer after it develops. During the procedure, physicians can remove polyps, which are small growths that form in the colon or rectum. Most polyps are not dangerous, but some can become cancerous over time. Removing them early can stop cancer from developing in the first place.
Preparation is often the part patients worry about most. Before the procedure, patients are usually asked to follow a clear liquid diet and take a cleansing solution that empties the bowel. Doctors say it is important to follow the instructions carefully because a clean colon allows the physician to see clearly and avoid repeating the procedure.
Experts also recommend preparing a few days in advance by eating lighter meals and avoiding high fibre foods such as whole grains, raw vegetables, fruits, nuts, and seeds. Drinking extra water before the procedure can also help reduce dehydration and make the preparation process easier.
Patients are usually allowed clear drinks such as broth, clear juice, black coffee, tea, and certain gelatin or frozen treats, but doctors warn against red, blue, or purple colours because they can leave residue that may look like blood during the exam. Some patients also find that chilling the preparation drink or using a straw makes it easier to tolerate.
The actual colonoscopy is usually much shorter than the preparation process. TIME reported that the procedure often takes about 30 minutes, and most patients in the United States receive deep sedation, meaning they typically do not remember the exam itself. Many people wake up surprised that the procedure is already finished.
Doctors also want patients to know that there is no reason to feel embarrassed. Gastroenterologists perform colonoscopies routinely, and for them it is a normal medical procedure focused on prevention, diagnosis, and peace of mind.
The message from physicians is simple: if a colonoscopy has been delayed, do not panic, but do not ignore it either. Screening is meant to find problems before symptoms appear, and staying on schedule can play an important role in protecting long term health.
