HomeOntario now second province to lower colorectal cancer screening age to 45 – unpublished.ca Ontario now second province to lower colorectal cancer screening age to 45 – unpublished.caCanada Ontario now second province to lower colorectal cancer screening age to 45 unpublished.ca Ontario becomes 2nd province to lower colorectal cancer screening age to 45 CBC Ontario joins P.E.I. in lowering colorectal cancer screening age to 45 CP24