Today is National Colon Cancer Screening Day and doctors want people to know more about the disease. Colon cancer is the third deadliest form of cancer. But when it's caught early patients have a ninety percent chance of survival. Many patients avoid talking about screening for this disease with their doctor. And gastroenterologist Dr. Arnold Levy explains his theory on why there's a fear. To find out more about colon cancer visit www.stopcoloncancernow.com.