The only references I have seen in medical journals which suggest not using the antiperspirants is on the subject of alzheimers disease. Evidently quite a bit of aluminum has been found in the brains of those suffering the disease--which can only be discovered in the process of he autopsy. As I understand it, this is one of the only ways of absolutely diagnosing the disease. Having worked with alzheimer's patients & their families, I know it is NOT a kind way to go.