Colorectal Cancer Screening Cuts Death Risk by 43 Percent in Swedish Long-Term Study
A long-term study of more than 376,000 participants in Sweden found that consistent colorectal cancer screening reduced the risk of dying from the disease by 43 percent. Researchers said the findings support expanding access to routine screening programs.
Consistent colorectal cancer screening reduced the risk of dying from the disease by 43 percent, according to a long-term study of more than 376,000 participants in Sweden.
The research, published in August 2026, tracked participants over many years and compared outcomes between those who received regular screening and those who did not. The reduction in mortality was consistent across age groups and screening methods.
Colorectal cancer is one of the most common cancers worldwide and one of the most preventable when caught early. Screening can detect precancerous polyps before they develop into cancer, as well as identify cancer at an early stage when treatment is more effective.
Researchers said the Swedish data is particularly valuable because of the size of the study and the length of follow-up. Most previous studies on colorectal cancer screening have been shorter or involved smaller populations.
The findings support current recommendations from major health organizations that adults begin regular colorectal cancer screening at age 45. However, researchers noted that screening rates remain lower than recommended in many countries, including the United States.
Barriers to screening include cost, lack of awareness, and discomfort with the procedures involved. Researchers said the new data should strengthen the case for policies that make screening more accessible and affordable.
Simple at-home stool tests are available as an alternative to colonoscopy for people who prefer a less invasive option. Studies have shown these tests can also significantly reduce colorectal cancer deaths when used consistently.
