People want to know. Can we prevent Alzheimer's? Certainly, there are no guarantees. Throughout my years writing for this site, I've written about studies on exercise, diet and brain games. All have shown some promise, but none say "this will prevent Alzheimer's." Now, a Wall Street Journal article titled "How to Outsmart Alzheimer's: New Effort Tries to Fight Disease With Word, Math Games, even Wii for Exercise," shines an even brighter light on this approach.