 [ Symptoms ] at what age should you stop having colonoscopies if you have no symptoms of bowel trouble  my 80 year old mother has dementia and i hate to put her through the prep for the test even though her father died during surgery to remove part of the colon because of cancer 50 years ago [ Disease ] when you die keep on having those wonderful tests it saves lives i know of one person that had a colonoscopy and it saved his life by the time you think you are having some problems it could be too late i am every five years now grin and bear it