Current guidelines don’t recommend colonoscopy after age 75, except for patients considered to be high risk for colorectal cancer. However, an analysis of data on colon cancer cases and deaths from over 56,000 patients found that people who had colon cancer screening after the age of 75 had a 39% lower risk of colon cancer and a 40% lower risk of death from colon cancer, regardless of whether they had been screened at an earlier age. The findings suggest that colonoscopy guidelines may need amending. JAMA Oncology, May 2021