There is still this persistent myth about a connection between aluminium and Alzheimer disease.
Here is some more recent information on this matter:

This is from the Update Sheet, June 2008, by Alzheimer's Australia:
"However the balance of evidence does not appear to support a specific role for aluminium in Alzheimer's disease"
"Both Aluminium and Alzheimer's Disease begin with the letters "Al". That's about the only link between them, but some people claim that the link is much stronger, and that aluminium causes Alzheimer's Disease."
Karl S. Kruszelnicki

Dr. Charles DeCarli, the director of the Alzheimer's Disease Center at the University of Kansas Medical Center says, "In my opinion, the supposed relation between aluminum and Alzheimer's Disease is a simple case of neuromythology".