Experts are warning that a common foodborne bacterium, E.coli, may play a key role in the alarming rise of colorectal cancer among individuals under 50.

This concern follows the recent death of Dawson’s Creek Star James Van Der Beek, who succumbed to bowel cancer at age 48.

The incidence of bowel cancer among young people in the UK has increased sharply, with individuals now 50% more likely to develop the disease compared to the early 1990s.

Colibactin: The E.coli Toxin Driving DNA Mutations

Scientists have identified a specific toxin produced by E.coli, called colibactin, which can cause mutations in colon cells, raising cancer risk.

Research shows that individuals with familial adenomatous polyposis carrying colibactin-producing bacteria are over three times more likely to develop bowel cancer.

Mutations induced by colibactin in childhood, even before age 10, may set the stage for cancer decades later.

The study published in eGastroenterology found that polyps containing E.coli were more inflamed and aggressive, suggesting a conducive environment for tumor development.

Implications for Screening and Prevention

Currently, the UK’s bowel cancer screening program targets individuals aged 50–74, using an at-home faecal immunochemical test (FIT).

The rising incidence in younger adults may necessitate earlier screening and innovative preventive strategies, such as tests for colibactin exposure and methods to eliminate the bacteria before DNA damage occurs.

Lifestyle and environmental factors—including obesity, smoking, and inflammatory bowel disease—also contribute to the surge in young-onset colorectal cancer.

Experts emphasize that early detection and intervention will be critical to reducing mortality and improving long-term outcomes.