
Marathon Runners Face Unexpected Colon Cancer Risk, New Study Suggests
Over the course of about a year, Timothy Cannon, MD, who co-directs the Gastrointestinal Cancer Program at Inova Schar Cancer Institute, saw three strikingly similar patients. All of them were relatively young. All of them were not just healthy, but “extreme athletes” who ran long distances. And all of them had stage IV colon cancer….