My impression is that colonoscopy is less controversial than other forms of screening, even among people who tend to see cancer screening very critical. The US

My impression is that colonoscopy is less controversial than other forms of screening, even among people who tend to see cancer screening very critical. The USPSTF tends to advise against cancer screenings without good evidence, and they are positive about colonoscopy: https://uspreventiveservicestaskforce.org/uspstf/draft-recommendation/colorectal-cancer-screening3 https://uspreventiveservicestaskforce.org/uspstf/draft-recom...