Colorectal cancer deaths are climbing among younger adults in the United States, and a new national study says the burden is landing almost entirely on people who never earned a four-year college degree. Public-health experts say that stark pattern points less to a single mystery gene and more to the everyday realities of income, access and opportunity. The research, published this week in a major cancer journal, suggests it is time to rethink who is considered most at risk and how prevention and screening are delivered.
Study methods and headline findings
According to The Associated Press, the paper in JAMA Oncology examined government mortality records for more than 101,000 Americans ages 25 to 49 who died of colorectal cancer between 1994 and 2023. Researchers found that the overall death rate in that age group rose from roughly 3 to about 4 per 100,000 during that period, and that the increase was concentrated almost entirely among people without a four-year college degree.
Who saw the biggest jump
American Cancer Society researchers led by Ahmedin Jemal reported that people whose highest education was a high-school diploma saw colorectal cancer death rates rise from about 4 to 5.2 per 100,000, while rates for those with at least a bachelor’s degree held steady at about 2.7 per 100,000. Jemal said the findings highlight the need for the public to take colorectal cancer seriously and for younger adults in particular to follow screening guidance, according to The Associated Press.
How big is the problem nationally
Projections from the American Cancer Society estimate roughly 158,850 new colorectal cancer cases and about 55,230 deaths across the U.S. in 2026, underscoring how widespread the disease already is. Local coverage of the new study notes that about 3,900 of those deaths, or roughly 7%, are expected in adults under 50, a smaller slice of the total that is nonetheless growing quickly in relative terms (MySanAntonio).
Risk factors and what remains unknown
Scientists still have not pinned the rise in younger adults on any single cause. Established risk factors include obesity, physical inactivity, diets high in red or processed meat, and a family history of colorectal cancer, according to the National Cancer Institute. Earlier work has shown that colorectal cancer mortality among Americans under 50 has been edging up by about 1.1% per year since 2005, a steady upward trend that researchers are still working to fully understand (AHA News).
Screening, access and expert recommendations
Screening advice has already shifted to reflect growing concern about earlier-onset disease. The American Cancer Society began recommending routine colorectal cancer screening at age 45 in 2018 for people at average risk. In 2021, the U.S. Preventive Services Task Force issued its own recommendation to offer screening starting at 45, a move that formally widened the screening window for millions of adults.
Experts say the education gap uncovered in the new analysis most likely reflects differences in who actually gets screened, who has insurance and who can navigate the health system, along with other social determinants of health. That points to some very practical countermeasures: expand low-barrier testing options, fund outreach that reaches working-class communities and make sure people get prompt follow-up when a test comes back abnormal.
For the study authors and many public-health advocates, the message is blunt. Early-onset colorectal cancer is increasingly an equity issue, not just a medical mystery. Targeted prevention, accessible screening and a hard look at structural barriers could prevent a significant share of the deaths that are now falling disproportionately on Americans with less formal education.
