Hey, My Sweat Doesn't Smell: Deodorant Toxicity.

There has been much controversy over the health risks associated with aluminum in deodorant and antiperspirant products.  A 1998 study linked aluminum containing antiperspirants with Alzheimer’s disease.  Other evidence linked breast cancer with aluminum containing antiperspirants.  Aluminum is usually not present in a non-antiperspirant deodorant.  It is established that aluminum is considered a neurotoxin in high doses.  The Alzheimer’s Association views the evidence as circumstantial and does not recognize a causal relationship between aluminum and Alzheimer’s disease.  Aluminum in underarm deodorants and antiperspirants has also been linked to breast cancer, but both the American Cancer Society and the National Cancer Institute find the evidence to inconclusive.  Of course, the absence of evidence is not evidence of the absence of a harmful effect.  Instead of doing research, many individuals have opted to avoid antiperspirants entirely and have sought aluminum-free deodorants.  Until the debate is settled, there is no harm in avoiding aluminum.