Ontario lowers colorectal cancer screening age to 45 by 2026

Ontario will lower its colorectal cancer screening age from 50 to 45 starting July 1, 2026. The change follows rising rates of early-onset cases and aligns with recommendations from an expert panel. Other countries, including the United States and Australia, have already adopted the same policy. The decision comes as younger adults face a higher risk of colorectal cancer than past generations. Studies show people under 50 are now two to 2.5 times more likely to receive a diagnosis. Cancer Care Ontario’s move aims to reduce both incidence and deaths through earlier detection.

Screening will use the fecal immunochemical test (FIT), the standard method for routine checks. Invitation letters will roll out gradually, but doctors can request FIT for patients aged 45 to 49 from the start date. Those with a family history of colorectal cancer under 60 will also qualify for earlier colonoscopies. Prince Edward Island became the first Canadian province to lower its screening age to 45 in March 2026. Ontario’s shift is expected to increase abnormal test results at first, leading to higher demand for surgeries and pathology services.

The updated guidelines take effect on July 1, 2026. Health officials anticipate the change will detect more cases early, improving treatment outcomes. The policy reflects broader trends in cancer screening as rates among younger adults continue to climb.