"The observation that air-borne aluminum dust was most likely responsible for the elevated levels of aluminum in the brain must then heavily implicate the nose and possibly the lungs as the main routes of entry of aluminum into the body and the brain.
"Overall, these results suggest very strongly that occupational exposure to aluminum contributed significantly to the untimely death of this individual with Alzheimer's disease."
You cannot extend this report to mean that any contact with aluminum can cause Alzheimer's disease. You have to read these things carefully. This man was exposed to air-borne aluminum dust daily for eight years. That is NOT the same as aluminum in cookware, deoderants, canned goods and all the other items that were listed.
Aluminum dust probably entered this man's nose/lungs and progressed to the brain. However, this is one case only, and there isn't enough proof of anything to draw any sort of conclusion.