Numerous studies have looked for a link between antiperspirants and cancer/alzheimer's, but none of them have found a link.

The only health effects they have been able to find is acne, so if you’re getting acne in the areas that you spray with antiperspirant, the recommendation is to try different ones until it stops.

My Dad has been using the iPhone 6S I bought in 2015. It was running the latest version of iOS up until a month or two ago. Still works, just can’t update to iOS16. 7 years from a phone is pretty good.