Let's be honest:  no one enjoys getting a colonoscopy.  And yet when early detection is the key to treating colon cancer before it becomes fatal ... that unpleasant procedure is just one of two options you have for screening.

The other one involves a fecal test, which is also fairly unpleasant.

But a game changing colon cancer screening tool could soon become widely available.

No intrusive exams, no handling of your own waste .... this new tool is a simple blood test.

Dr. John Carethers is a gastroenterologist and vice chancellor for Health Sciences at U-C San Diego.