I seem to remember a rather tenuous link at best once further studies were completed in the 90’s.
If you wear a tin foil hat, you are more likely to have Alzheimer's. "Tin" foil is really aluminum foil. Also, "Alzheimer's" contains the chemical symbol for aluminum, Al.
Seriously, I thought the Al->Alzheimer's link had been discredited. The amyloid plaques just seem to trap metals, I thought; the plaques are the real problem.