You know what to do for heartburn: pop a couple of antacids after dinner, avoid common triggers like fatty, greasy, or spicy foods, and hope it goes away quickly. Right? Well, not necessarily. If you have regular heartburn—two or more times a week—and haven’t notified your doctor, you’re ignoring one of the biggest cancer risk factors around.
http://www.prevention.com/health/health-concerns/acid-reflux-and-esophageal-cancer
Could Your Heartburn Lead to Cancer?