At What Age Should You Get a Colonoscopy?
5/28/2025
Colorectal cancer is one of the most highly treatable forms of cancer when detected early, yet many people delay or avoid important screening tests like a colonoscopy. At Denmark Digestive Health in Weston, MA, board-certified gastroenterologist Dr. Vera Denmark offers advanced diagnostic care with a compassionate approach to help patients take proactive steps toward protecting their health.
Whether you're navigating new symptoms or simply reaching the age for routine screening, knowing when to get your first colonoscopy — which is now age 45 for people at average risk for colon cancer — is an essential part of long-term wellness.
What age should you get your first colonoscopy?
For most adults, the recommended age to get a first colonoscopy is 45. This guideline, updated from the previous recommendation of 50, reflects growing evidence that colon and rectal cancers are increasingly being diagnosed at younger ages. You may need to begin colonoscopy screening earlier than 45 if you have the following:
- A family history of colorectal cancer or polyps
- A personal history of inflammatory bowel disease (IBS)
- Certain genetic conditions
- A previous colonoscopy with abnormal findings
Dr. Denmark will review your personal and family medical history to determine the appropriate age for colonoscopy and screening frequency for your unique situation.
How often should you get a colonoscopy?
If your first colonoscopy is normal and you are at average risk, you'll typically only need the procedure once every ten years. However, the timing may change based on your health history or if polyps are found during your screening. Colonoscopies may be recommended more frequently for those with:
- A history of colon polyps
- A diagnosis of Crohn's disease or ulcerative colitis
- A family member who had colorectal cancer before age 60
- Ongoing GI symptoms or previous abnormal tests
Again, Dr. Denmark will create a personalized screening schedule to ensure that potential issues are monitored and addressed promptly.
Can I get a colonoscopy at 40?
In some cases, a colonoscopy before 45 may be recommended. For example, if you're experiencing symptoms of colorectal cancer or have certain risk factors for colon cancer, it may be appropriate to have a colonoscopy before age 45. This is especially true if you have:
- Persistent abdominal pain or bloating
- Changes in bowel habits
- Rectal bleeding or blood in the stool
- Unexplained weight loss
- A strong family history of colorectal conditions
Generally speaking, there's no harm in getting screened early if it means catching potential problems before they progress. Dr. Denmark will help you determine if early colonoscopy screening is right for you based on your symptoms and background.
What are the risks of skipping a colonoscopy?
Skipping a recommended colonoscopy may delay the detection of colorectal cancer or other gastrointestinal conditions. Because early-stage colorectal cancer often causes no symptoms, routine screening is critical to identify and remove polyps before they become cancerous. Avoiding or delaying a colonoscopy could lead to unwanted consequences, including:
- Late-stage cancer diagnosis
- More invasive or intensive treatment
- Unmanaged GI conditions like inflammatory bowel disease (IBD)
- Increased risk of complications from undetected growths
With today's advanced technology and sedation options, a colonoscopy is safer and more comfortable — and it could save your life.
Get peace of mind about your GI health with a colonoscopy in Weston, MA
Whether you're due for your first colonoscopy or are concerned about new GI symptoms, board-certified physician Dr. Vera Denmark and our team at Denmark Digestive Health in Weston, MA are here to guide you through the colonoscopy process with care. Remember, early detection can be your best defense against colorectal cancer. For more information about when to schedule a colonoscopy, contact us today.