A colonoscopy does not cause cancer, and skipping recommended screening because of internet fearmongering is dangerous. Colonoscopies are preventative because they detect and resect precancerous adenomatous polyps before malignant transformation occurs. If you have concerns about the prep or the procedure, talk to your gastroenterologist about alternatives like stool-based DNA tests rather than ignoring screening altogether. #DrZackMD #Colonoscopy #Gastroenterology #CancerPrevention #EvidenceBasedMedicine