Most preventive screenings cost more to administer than the diseases they diagnose or prevent.
That is why most commercial insurance did not cover as much as ACA mandated.
The problem with all the studies showing the rate of finding cancer is low, if you are the one they find cancer in, then screening is well worth the cost to society from your viewpoint!
Several studies show the complication rate seems to be a bit lower that the rate at which cancer is found, not what I was expecting and trying to show. Their is not a lot of detail on age, and one study I found said, for ages 40 to 49, "the The low yield of screening colonoscopy in this age group is consistent with current recommendations about the age at which to begin screening in persons at average risk" I don't know what the current recommendations are, but as I read that, it means it is not recommended.
https://pubmed.ncbi.nlm.nih.gov/12050337/
Re: Colonoscopies, "Recently, the perforation rate, as reported in large studies, ranges from 0.005-0.085%. The perforation probability after colonoscopy does not decrease over time in either the West or the East. Other studies have reported post-colonoscopy bleeding occurring in 0.001-0.687% of cases.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6337013/
The incidence of Colon Perferation ranges from
0.016% to 0.2% following diagnostic colonoscopies and could be up to 5% following some colonoscopy interventions.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2811793/
"The low yield of screening colonoscopy in this age group is consistent with current recommendations about the age at which to begin screening in persons at average risk.
https://pubmed.ncbi.nlm.nih.gov/12050337/
"Colon cancer is found during only in about 40 out of 10,000 screening colonoscopies, Dr. Sand said." 40 / 1000 = 0.4%
https://www.honorhealth.com/healthy-living/are-all-colon-polyps-precancerous-or-worse