Colonoscopies save lives. Doctors push back against European study that casts doubt October 13, 2022 https://www.npr.org/sections/health-shots/2022/10/13/1128531054/colonoscopies-save-lives-doctors-push-back-against-european-study-that-casts-dou Research going back more than a decade has shown that colonoscopies can save lives; A 2018 study from Kaiser Permanente, for example, found a 67% reduction in cancer deaths among people who got a screening colonoscopy. https://pubmed.ncbi.nlm.nih.gov/27733426/