The hope is that early detection will allow for prevention. Right now it's difficult to diagnose Alzheimer's until the brain is too damaged to function normally, but some treatments may be able to prevent it from getting worse at an early stage.
There's also a theory (not sure how scientifically valid) that Alzheimer's might be a form of Diabetes (http://opinionator.blogs.nytimes.com/2012/09/25/bittman-is-a...). If that's the case, then it might be possible to prevent the disease by diet alone.
There's also a theory (not sure how scientifically valid) that Alzheimer's might be a form of Diabetes (http://opinionator.blogs.nytimes.com/2012/09/25/bittman-is-a...). If that's the case, then it might be possible to prevent the disease by diet alone.