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You are here: Home / Health / Antiperspirants Influence the Armpit’s Microbial Biodiversity

Antiperspirants Influence the Armpit’s Microbial Biodiversity

February 4, 2016 Posted by Gabrielle Stewart

antiperspirant

Society frowns upon body odors, and for good reason, so we turn to deodorants to prevent any embarrassing social situations. However, not many know that the simple act of using an antiperspirant has a massive effect on the ecosystem of your skin.

The human skin is home to thousands of bacteria species, your armpit in particular, and a new research found that using deodorants and antiperspirant can dramatically affect both the type and quantity of bacteria living on the skin.

According to study author Prof Julie Horvath with the North Carolina Central University, the study’s target was finding the effect of antiperspirant and deodorant on the body’s microbial life, and how we can influence the microbiome with our daily habits influence.

For the study, 17 participants were asked to experiment with various uses of deodorants and antiperspirant. Just a few subjects were regular users of antiperspirant products that inhibit the amount of sweat produced by the body.

Some of the participants used deodorants which reduced odor, while others didn’t use anything. The experiment lasted 8 days, as researchers gave each participant instructions regarding the use of deodorants or antiperspirants.

On day one, participants followed their usual routine in regard to their deodorant or antiperspirant use. Day 2 to 6, they were asked to use no deodorant or antiperspirant, while on day 7 and 8, all subjects used antiperspirants.

On each day, researchers assessed the level of microbial organisms growing on each participant by taking daily samples from the skin. Lab results showed that people who used antiperspirants presented fewer microbes in their samples than those who did not use any products at all.

At the same time, the participants who used deodorants turned out to have the most bacteria; when researchers tested the samples from day 7 and 8, they found that all the subjects had fewer microbes, suggesting that using these products actually reduces bacteria on the skin.

Researchers also discovered that deodorants or antiperspirants influence the armpit’s microbial biodiversity; using neither of two products resulted in a 62 percent Corynebacteria and 21 percent other Staphylococcaceae bacteria. While most of Staphylococcaceae bacteria are believe to be not harmful, some can still pose threat to human health.

Overall, these products can have a strong effect on the bacterial composition of one’s armpits. Stopping the use deodorant or antiperspirant similarly encourages the presence of Staphylococcaceae over Corynebacterium, but the two products have differential modes of action that result in different effects on the bacteria living in the armpit.
Image Source: Test Tube

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Filed Under: Health

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About Gabrielle Stewart

Gabrielle Stewart graduated from Case Western Reserve University’s School of Graduate Studies with a Masters of Arts in Communication Sciences. She’s an avid reader and a lifelong learner. She likes to cover a wide range of news, but she’s particularly keen on Science.

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