taking in aluminum at the amount that the ionto would give out is relatively safe. To be honest, anti-perspirant/deodorant would be more dangerous cuz theres usually a high content of aluminum zirconium that CAN help develop alzheimers for some individuals. But for the most part, you should be fine, don't stress it
PS. nickel, chromium, iron, etc can all be found naturally in the human body.
Edit: etsveteran if your getting those type of side effects, you could be allergic to something that your using along the process imo