>> some people may not want to know they are deft upped for a devastating disease. >> how does it get closer to treatment for alz himers? >> doctors want to vent it and not just treat it. if you can put together a group of 100 people, you are sure deft upped to get alz himers and you can try the treatments. right now we can't do that. if this test gives us a nice group of people to study, it would really advance this research by a long shot. >> keep following it for sure. would you want to know if alzheimer's was in you're future or not. here to talk about the emotional and ethical and psychological issues. i would want to be pro active and change my odds. >> we have to look at each psychology and how they handle