As adults grow older, many healthcare decisions become more complex. One of the most common questions is whether to continue regular colonoscopy screening or surveillance after age 75, especially for people who previously had adenomas, which are polyps that can sometimes develop into colorectal cancer.
A newly published study in JAMA provides important insight. Researchers found that while older adults with prior adenomas had a slightly higher risk of colorectal cancer than those without adenomas, their overall risk remained low. More importantly, the chance of dying from other causes was far greater than the chance of developing or dying from colorectal cancer.
This research may help patients, families, and doctors make smarter, more personalized decisions about colonoscopy after age 75.
Colorectal cancer is cancer that begins in the colon or rectum. It is one of the most common cancers worldwide, but it is often preventable through screening.
Colonoscopies can detect and remove polyps before they become cancerous. Some polyps, known as adenomas, are considered precancerous because they may eventually turn into cancer.
That is why people with adenomas are often advised to have repeat colonoscopies over time.
Many adults over 75 continue to receive surveillance colonoscopies because of a history of adenomas. However, medical guidelines have become more cautious about routine screening at older ages.
The key reason is simple:
This new study aimed to determine whether continued surveillance actually offers meaningful benefit after age 75.
Researchers led by Dr. Samir Gupta examined health data from the United States Department of Veterans Affairs.
The study included 91,952 adults aged 75 or older who had undergone colonoscopy before turning 75.
They were divided into two groups:
The researchers then followed outcomes over 10 years.
At 10 years:
While adenoma history slightly increased risk, the overall numbers were still low.
At 10 years:
This means fewer than 1 in 200 participants died from colorectal cancer.
At 10 years:
That means nearly half of participants died from other causes during follow-up.
This was the most striking result of the study.
For many people over age 75, the larger health concern may not be colorectal cancer.
Instead, conditions such as:
may pose a much greater threat.
That does not mean colonoscopy is never helpful. It means decisions should be individualized rather than automatic.
Many patients are told years earlier that adenomas increase future cancer risk. While that is true in younger populations, this study shows the balance changes later in life.
After age 75:
This suggests that a prior adenoma should not automatically trigger repeated surveillance in every older adult.
Researchers also looked at frailty levels.
Among adults with prior adenomas:
In severely frail adults, non colorectal cancer death reached 82% over 10 years.
That finding highlights how physical condition can be more relevant than colon polyp history when making screening decisions.
Not always.
Some healthy adults over 75 may still benefit, especially if they:
However, others may reasonably choose to stop routine surveillance.
The best decision depends on:
If you are over 75 and wondering about another colonoscopy, consider asking:
These questions can help guide shared decision-making.
Yes. In some cases, less invasive options may be considered:
The right choice depends on medical history and physician guidance.
Many families assume more testing is always better. But in older age, medical decisions become about balance.
Sometimes the most valuable care is:
This study reminds us that healthcare should focus on what matters most now, not simply repeat what was done before.
This major study offers reassurance to many older adults. Having had adenomas in the past does not necessarily mean endless colonoscopies are needed later in life.
For adults over 75, the bigger picture matters more than a single past finding. Health status, independence, quality of life, and personal goals should guide future care.
Instead of asking, “Should everyone continue colonoscopy?” the better question may be:
“Will this test meaningfully help this person now?”
That is a far more powerful and patient-centered approach.
Gupta S, Liu L, Demb J, et al. Colorectal Cancer and Mortality Risk Among Older Adults With vs Without Adenoma on Prior Colonoscopy. JAMA. Published online April 9, 2026. doi:10.1001/jama.2026.3414
This article is for educational and informational purposes only. It does not provide medical advice, diagnosis, or treatment. Always consult your physician or qualified healthcare provider before making decisions about colonoscopy, cancer screening, or any medical care.
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