Study: Colonoscopy effectiveness being questioned

Photo by: WDAY Radio Staff
Photo by: WDAY Radio Staff

(Oslo) -- Colonoscopies may not be as useful for cancer screening as previously thought.

A new study finds that the procedure led to an 18 percent lower risk of cancer, but no reduction in the cancer death rate. That was among people invited to get a colonoscopy, more than half of which didn't.

Among those who did, the death rate was cut by 50 percent.

The results were published Sunday in the New England Journal of Medicine.