Colorectal cancer is silently striking more people under 50, and it’s leaving experts baffled. But here’s where it gets even more alarming: despite high-profile cases like the tragic deaths of actors James Van Der Beek (aged 48) and Chadwick Boseman (aged 43), no one can definitively explain why this trend is happening. Van Der Beek, known for his role in Dawson’s Creek, and Boseman, celebrated for Black Panther, both succumbed to this disease, raising urgent questions about its rising prevalence in younger adults.
Since the 1990s, the rate of colorectal cancer diagnoses in people under 50 has surged by roughly a third, according to Helen Coleman, a cancer epidemiology professor at Queen’s University Belfast. And this is the part most people miss: while this increase sounds terrifying, it’s important to note that the starting point was relatively low. The majority of cases still occur in older adults, with only six percent of all colorectal cancers diagnosed in those under 50, based on Coleman’s research in Northern Ireland. In some regions, rates among older individuals are even stabilizing or declining, thanks to improved screening methods.
However, the shift in younger demographics is deeply concerning. Many young people don’t consider themselves at risk, as colorectal cancer was historically associated with older age. By the time they’re diagnosed, it’s often too late—a heartbreaking reality exemplified by Van Der Beek’s case. Controversially, while lifestyle factors like poor diet, lack of exercise, smoking, and alcohol consumption are linked to this cancer, they don’t fully explain the rapid rise in cases. Even individuals like Van Der Beek, who prioritized health through practices like biohacking, saunas, and cold plunges, weren’t immune. “I had stage three cancer and had no idea,” he shared in a December 2023 interview, just months before his passing.
So, what’s driving this sudden increase? “We don’t know,” admits Jenny Seligmann, a colorectal cancer researcher at the University of Leeds. This mystery has prompted scientists to explore less obvious causes, including the microbiome—the complex ecosystem of gut microbes that remains largely uncharted. A 2023 study in Nature uncovered a potential clue: DNA mutations linked to colibactin, a toxin produced by E. coli bacteria, were more prevalent in younger colorectal cancer patients than in older ones. Yet, much more research is needed to confirm this connection.
Here’s where it gets controversial: some studies suggest repeated antibiotic use might be a factor, while others highlight the diversity of colorectal cancer subtypes, indicating there’s likely no single cause. “It’s going to be very difficult to pinpoint,” Seligmann notes. Before his death, Van Der Beek passionately urged anyone experiencing symptoms—such as changes in bowel movements, blood in stool, unexplained weight loss, or fatigue—to seek testing immediately. “If you’re 45 or older, talk to your doctor,” he pleaded.
In response to the rising trend, the U.S. lowered its screening age from 50 to 45 in 2021, and advocates are pushing for other countries like the UK and France to follow suit. But here’s the question that lingers: Are we doing enough to address this growing crisis? And could factors like environmental changes, modern diets, or even antibiotic overuse be playing a larger role than we realize? Let’s discuss—what do you think is behind this alarming rise, and what steps should we take next?
