This computer-enhanced barium contrast X-ray shows colon cancer in red. Researchers have been trying to figure out what looks to be a decade-long rise in colon cancer among people younger than 50.
Scott Camazine/Science Source
Kristen Miller, a colonoscopy patient, sits with Dr. Stephen Hanauer at the University of Chicago Medical Center in Chicago in 2010. They're looking at an interactive computer program describing benefits and risks of the procedure.