Drinking From a Can Has br One Major Side Effect, Study Says.br The 'Journal of Alzheimer's Disease'br published a study looking at how br exposure to aluminum...br may impact people’s predisposition br to dementia-related illnesses.br The study found that aluminum may br play a role in forming plaques in the brain br that precede the onset of Alzheimer’s.br Past research has concluded that aluminum br found in everyday products, such as deodorants, br is associated with neurodegenerative illnesses.br Other studies show that br an alternative reason br may also be that as br people age, .