If tests show someone is genetically predisposed to Alzheimer's, how can they reduce their risk?

Not really. To reduce the risk, if you do have a very positive family history, one of the things that we think about are trying to reduce any other risk factors that might contribute. Those go to cardiovascular and other things that we know contribute to some brain cell loss. The big thing though is that the more active you keep your brain, the more you do word games and crossword puzzles and number games and those sorts of things, the more you exercise, the more you maintain strong social relationships, we know that all those things can mitigate your chances of getting Alzheimer's disease and other dementias.