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Antiperspirant Safety: Should You Sweat It?

What to know about the rumors about antiperspirants.
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Antiperspirants and Cancer continued...

Considering that one out of every eight women will develop breast cancer at some point in her lifetime, the idea that antiperspirants might somehow contribute to the disease is a pretty serious claim.

Yet experts say the claims don't hold up to scrutiny. "There is no convincing evidence that antiperspirant or deodorant use increases cancer risk," Ted S. Gansler, MD, MBA, director of medical content for the American Cancer Society, said in an e-mail interview.

Gansler says many of the studies that have been conducted were flawed, and even though a few detected chemicals from antiperspirants in breast tissue, they didn't prove that those chemicals had any effect on breast cancer risk. In fact, one well-designed study comparing hundreds of breast cancer survivors with healthy women, as well as a review of all available studies on the subject, found no evidence that antiperspirants increase the risk of breast cancer.

Worrying about antiperspirants shouldn't distract women from addressing the real breast cancer risks, Gansler says, especially the ones they can control, like eating healthy, getting regular exercise, and limiting alcohol.

Antiperspirants and Alzheimer's Disease

Back in the 1960s, a few studies found high levels of aluminum in the brains of people with Alzheimer's disease. The research suddenly called into question the safety of everyday household items such as aluminum cans, antacids, and antiperspirants.

But the findings of these early studies weren’t replicated in later research, and experts have essentially ruled out aluminum as a possible cause of Alzheimer's.

"There was a lot of research that looked at the link between Alzheimer's and aluminum, and there hasn't been any definitive evidence to suggest there is a link," says Heather M. Snyder, PhD, senior associate director of medical and scientific relations for the Alzheimer's Association.

According to the experts interviewed for this story, the aluminum in antiperspirants doesn't even typically make its way into the body.

"The aluminum salts do not work as antiperspirants by being absorbed in the body. They work by forming a chemical reaction with the water in the sweat to form a physical plug... which is deposited in the sweat duct, producing a blockage in the areas that it's applied," says David Pariser, MD, professor of dermatology at Eastern Virginia Medical School and past president of the American Academy of Dermatology. "Even [with] nicks from shaving, the amount is so negligible that it doesn't make a whole lot of scientific sense."

 

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