Aluminum does not cause Alzheimer's!
Aluminum is toxic, but....Aluminum can cause toxicity, but Alzheimer's Disease (AD) is not one of the problems associated with aluminum (Al).
There are quite a few elements other than carbon, hydrogen,oxygen, nitrogen, phosphorus, iron, copper, calcium and sulfur that are essential nutrients. These others are usually called micronutrients because only a small amount of each is needed. Zinc, manganese, magnesium, selenium and cobalt are among these elements. Al is not needed. But, it is non-toxic at the levels you would get from drinking or eating foods and beverages from Al cans. At higher doses, Al can cause problems, most notably in dialysis patients. It can even cause neurotoxicity - yes - affecting the brain - BUT at higher doses than you get unless you work in an environment with Al dust or other unusual situation.
Where can you get more information?Reading and citing peer-reviewed scientific publications rather than rumors is the way to prevent the misinformation including the Al-AD myth. It was an observation that did not hold up to carefully done research. To see some of the scientific evidence on this topic and Al toxicity see: