CNN Sanjay Gupta MD August 17, 2013 20:41:00
Companies are developing eye tests looking for signs of impairme impairment. one based and some of the doctor's work. last year approving a type of brain scan to help with early detection. the next question people ask and i ask, is there value in finding it early? anything you can do tab? tab? >> i think there's value in trying to find it earlier, and trying to develop technologies to detect it earlier, but i would agree with you. unless that early detection tool is linked to a specific treatment, there may not be that much value. we need sort of a cholesterol test for the brain. if you have h...