You may use your antiperspirants without worrying about getting breast cancer from them. A version has been circulating listing her as the author. Somebody's violated netiquette, but I'm pleased that the truth is getting out, even it doesn't show me at my most tactful. Urban folklore describes aluminum in antiperspirants as a cause of Alzheimer's. The lone article suggesting a link is a speculative essay by a non-physician chemist.
Aluminum causes dialysis dementia but the neuropathology was very different.