Rectal cancer is becoming a serious concern among younger adults, and new research shows that the situation may be getting worse faster than many people expected.
For many years, colorectal cancer was mostly seen as a disease that affected older adults. Doctors often focused on screening people over the age of 50, and younger people were rarely considered at high risk. However, recent findings suggest that this way of thinking may no longer be correct.
The study, led by Mythili Menon Pathiyil from SUNY Upstate Medical University, will be presented at Digestive Disease Week (DDW 2026).
It highlights a worrying trend: deaths from rectal cancer among younger adults, especially older millennials, are rising quickly. In fact, rectal cancer deaths are increasing much faster than deaths from colon cancer in the same age group.
To understand this trend, researchers analyzed U.S. death records from 1999 to 2023. They used data from the Centers for Disease Control and Prevention database and focused on adults aged 20 to 44.
This large dataset allowed them to examine patterns across different groups, including men and women, different ethnic backgrounds, and people living in different regions of the country.
The results showed that deaths from colorectal cancer have been steadily increasing in younger adults. However, the rise in rectal cancer deaths was especially striking. Across all groups, rectal cancer mortality increased two to three times faster than colon cancer. Among adults aged 35 to 44, the increase was particularly strong, and the trend is expected to continue in the future.
To look ahead, the researchers used a statistical model to predict what might happen if current trends continue.
Their projections suggest that rectal cancer deaths will keep rising through 2035, especially among people in their late 30s and early 40s. Some groups appear to be affected more than others. Hispanic adults and people living in Western regions of the United States showed the fastest increase in death rates.
These findings raise important questions about how cancer is detected and treated in younger people.
One major concern is that symptoms in younger adults are often ignored or misunderstood. For example, signs like rectal bleeding or changes in bowel habits may be mistaken for less serious problems, such as hemorrhoids. As a result, diagnosis is often delayed.
The study also points out that younger patients often take longer to receive treatment after symptoms begin. While older adults may start treatment within a month, younger patients may wait several months before receiving proper care. This delay can allow the disease to progress to a more advanced stage, making it harder to treat.
The researchers suggest that both doctors and patients need to become more aware of these risks. Screening methods may also need to be reconsidered. For example, a test called flexible sigmoidoscopy, which focuses on the lower part of the colon and rectum, could be more widely used to detect early signs of rectal cancer.
This study shows that rectal cancer is no longer a rare condition in younger adults. It is becoming an important public health issue that requires attention and action.
When reviewing these findings, it is clear that the study is based on a large and reliable dataset, which strengthens its conclusions. The use of predictive modeling also provides a useful view of what may happen in the future.
However, the study does have limitations. It relies on existing records and projections, which cannot fully explain why these trends are happening. More research is needed to understand the causes, such as lifestyle factors, diet, or environmental influences.
Overall, the study highlights a serious and growing problem. It shows that early symptoms should not be ignored, even in younger adults. Increasing awareness and improving early detection could play a key role in reducing deaths from rectal cancer in the years ahead.
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Source: SUNY Upstate Medical University.
