Not sure why you quote something that clearly has "the neutrality of this is disputed" right above it, as "fact", nor do I know why a man would worry about "breast cancer" because I do not, but here goes...
it takes a little more than someone on a message board to change the fact that aluminum in deodorant is a neurotoxin, as it clearly states just below the wikipedia you quote.
neurotoxin defined as
http://dictionary.reference.com/search?q=neurotoxin
Quote:
Aluminum has been established as a neurotoxin.[14] Aluminum chloride, an aluminum salt that is commonly used in antiperspirants, is also commonly used in studies on aluminum-induced neurotoxicity[15][16][17][18][19]. Aluminum itself adversely affects the blood-brain barrier, is capable of causing DNA damage, and has adverse epigenetic effects.[20][21] Research has shown that the aluminum salts used in antiperspirants have detrimental effects to a number of species such as non-human primates[22], mice[23], dogs[24] and others. An increased amount of Aluminum is also present in the brains of many Alzheimer's patients, although it is not yet known if this link is causal.[25][26]
An experiment with mice found that applying an aqueous solution of aluminum chloride to the skin resulted in "a significant increase in urine, serum, and whole brain aluminium."[27] Other experiments on pregnant mice showed transplacental passage of aluminum chloride.[23]
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we quote the same page.
http://en.wikipedia.org/wiki/Deodorant
I was not worried about breast cancer when I stopped wearing deodorant with aluminum in it.