One might think that there is an epidemic of Alzheimer's deaths, and those who seek funding for Alzheimer's will tell you so. The reality is that the rising deaths from Alzheimer's is a measure of medical success in dealing with the other ailments which have tended to kill people sooner than Alzheimer's.
We'll all die from something. Eventually something gives out, even the brain. Carpe diem, and try not to have a family history of Alzheimer's.