Is using aluminum foil in cooking a significant health hazard? Or are the disease-associated high tissue levels of aluminum seen in some studies mostly due to aluminum from other sources?

This is an exaggerated fear being generated and as such, constitutes a kind of manipulation of public thinking. It is redirecting attention and concern about a real issue, that of brain health, away from useful ideas that could help medicine, instead of a make-work exercise or assumption all one needs to do is eliminate all sources of aluminum from one's environment to prevent deterioration of brain function, when such is not the case.