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科学美国人60秒:止汗剂增加腋窝和脚蹼微生物的多样性

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Antiperspirant Boosts Armpit and Toe-Web Microbial Diversity

止汗剂增加腋窝和脚蹼微生物的多样性

You hear a lot about how what you eat will affect your microbiome. Probiotics. Prebiotics. Stuff like that. But your skin is swarming with microbes too—and the grooming products you use might affect what’s's living there. That's according to a study in the journal BMC Biology.

你会听到很多关于吃的东西会如何影响微生物群的说法。益生菌。益生元。诸如此类。但是皮肤也充满了微生物——你使用的美容产品可能会影响那里的生物。这是根据发表在BMC生物学杂志上的一项研究得出的结论。

For their tests, researchers recruited six men and six women. The volunteers left their skin alone for the first three weeks, except for a light body wash. Then, for the next three weeks, the participants applied a modern skincare arsenal: sunscreen and skin lotion, antiperspirant and foot powder. Finally, the volunteers returned to their usual routine, whatever it was for each person, for another three weeks.

在他们的测试中,研究人员招募了6名男性和6名女性。除了少量的沐浴露外,志愿者们在前三周不接触皮肤。然后,在接下来的三周里,参与者们使用了现代的护肤武器库:防晒霜和护肤液、止汗剂和足粉。最后,志愿者们在接下来的三个星期里恢复了正常生活。

Throughout that time, the scientists swabbed the volunteers' faces and forearms, armpits, and feet. Then they did chemical and genetic analyses of the samples. The lotion and sunscreen didn't appear to alter the microbiome. But they found, counterintuitively, that the antiperspirant and foot powder actually boosted the diversity of microbes in the armpits, and in between the toes. Perhaps because those products change nutrient and moisture levels, and thus create conditions that foster a wider variety of tiny occupants.

在这段时间里,科学家们擦洗志愿者的脸、前臂、腋窝和脚。然后他们对样本进行了化学和基因分析。这种乳液和防晒霜似乎没有改变微生物群。但他们发现,与直觉相反,止汗剂和足粉实际上增加了腋窝和脚趾之间微生物的多样性。也许是因为这些产品改变了营养和水分水平,从而创造了条件,培养了更广泛的微型居住者。

The researchers also found that different skin care routines altered the types of hormones and pheromones present on the subjects' skin. And they hypothesize that someday, personalized skin-care recipes could be tailored to individuals. To alter our pheromones in a systematic way, thus making us more attractive to others. Or less attractive, should anyone need to lessen their kavorka.

研究人员还发现,不同的皮肤护理程序会改变受试者皮肤上存在的激素和信息素的类型。他们假设,有一天,个性化的护肤配方可以为个人量身定制。以一种系统的方式改变我们的信息素,从而使我们对他人更具吸引力,或者不那么吸引人,如果有人需要减少他们的卡沃尔卡。

Antiperspirant Boosts Armpit and Toe-Web Microbial Diversity

You hear a lot about how what you eat will affect your microbiome. Probiotics. Prebiotics. Stuff like that. But your skin is swarming with microbes too—and the grooming products you use might affect what’s's living there. That's according to a study in the journal BMC Biology.

For their tests, researchers recruited six men and six women. The volunteers left their skin alone for the first three weeks, except for a light body wash. Then, for the next three weeks, the participants applied a modern skincare arsenal: sunscreen and skin lotion, antiperspirant and foot powder. Finally, the volunteers returned to their usual routine, whatever it was for each person, for another three weeks.

Throughout that time, the scientists swabbed the volunteers' faces and forearms, armpits, and feet. Then they did chemical and genetic analyses of the samples. The lotion and sunscreen didn't appear to alter the microbiome. But they found, counterintuitively, that the antiperspirant and foot powder actually boosted the diversity of microbes in the armpits, and in between the toes. Perhaps because those products change nutrient and moisture levels, and thus create conditions that foster a wider variety of tiny occupants.

The researchers also found that different skin care routines altered the types of hormones and pheromones present on the subjects' skin. And they hypothesize that someday, personalized skin-care recipes could be tailored to individuals. To alter our pheromones in a systematic way, thus making us more attractive to others. Or less attractive, should anyone need to lessen their kavorka.


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