An article covering some of the latest research on exercise and Alzheimer's disease appeared in Time Magazine recently. Drs. Rao, Smith and more have been collaborating on this subject for a long time. It is wonderful to see the word finally making it's way to the public!
A pdf of the article is below or you can find it on-line at http://wellness.blogs.time.com/2010/09/07/exercise-protects-against-alzheimer/