If you are concerned, you can get non-aluminum, natural salt deodorants.

My oncologist said there is not enough evidence to prove this. I have decided not to use anti- perspirant .

Ive heard the same thing, I use a stick now.

go natural. do not by most anything mainstream.

I have heard that it does. However, there are suppose to be some "safe" ones you can use. Unfortunately, I cannot tell you what they are. I have not used antipersperiant/deodorant since I was diagnosed in July 2012.