WereBear, thanks for this; I will look forward to reading the book. I made some of these decisions for myself awhile ago after reading something, somewhere, about overdiagnoses. My good friend had breast cancer - missed by the mammogram, caught on self exam. I found that Switzerland has given up recommending routine mammograms because of the high chance of false positives. My DH had a nasty bleeding episode after colonoscopy - had to be hospitalized for 3 days, and undergo another colonoscopy to find the bleed, and take care of it. My last mammogram was 4 years ago, and now that I am older I won't have another without good cause. Have never had a colonoscopy, and told my new Dr that I would prefer a non-invasive fecal immunochemcal test (FIT); she was fine with that. I recently read Dr Davis' "Undoctored", and found it informative.