For people at average risk of colorectal cancer, the general recommendation is to start getting colonoscopy screenings at age 45. This is supported by major organizations including the American Cancer Society and the U.S. Preventive Services Task Force. After the initial colonoscopy, if no polyps or abnormalities are found, the next colonoscopy is usually recommended every 10 years. Screening typically continues until age 75 for those in good health. For ages 76 to 85, the decision to continue screening is individualized based on the person’s health, preferences, and prior screening history. Screening is not generally recommended after age 85. People at higher risk—such as those with a family history of colorectal cancer, previous colon cancer or polyps, inflammatory bowel diseases (like Crohn's or ulcerative colitis), hereditary colorectal cancer syndromes, or prior radiation therapy to the abdomen or pelvis—may need to start screenings earlier than 45 and/or have them more frequently. Additionally, symptoms such as persistent changes in bowel habits, abdominal pain, unexplained weight loss, or rectal bleeding may necessitate earlier or diagnostic colonoscopy regardless of age. In summary:
- Average risk individuals: start at 45, repeat every 10 years if no issues found, up to age 75.
- Ages 76-85: screening based on individual health and preferences.
- Over 85: usually no screening.
- Higher risk individuals: screen earlier and/or more often.
It is important to consult a healthcare provider to determine the proper screening schedule based on personal risk factors and health status.
