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1 .This is Scientific American's 60-Second Health. I'm Christopher Intagliata. Got a minute?
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2 .The antimicrobial triclosan is a common ingredient in hand soap.
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3 .But it's also found in shampoos, deodorants, toothpaste, even lip gloss.
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4 .So it's not too surprising that triclosan also shows up in blood, urine, breast milk and mucus.
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5 .But here's the weird thing, those triclosan residues may actually boost bacterial growth in our bodies.
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6 .So says a study in the journal mBio.
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7 .Researchers swabbed inside the noses of 90 adults.
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8 .37 of the 90 tested positive for triclosan, and those who did were twice as likely to have the bug Staphylococcus aureus living in their noses.
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9 .Rats, too, were more susceptible to staph if fed triclosan.
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10 .Seems counterintuitive, but when bacteria are exposed to sublethal levels of antibiotics, they get stressed,
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11 .and "they attach to surfaces and hunker down, in things we call biofilms."
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12 .That's study author Blaise Boles, of the University of Michigan.
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13 .He says that stash of staph could put your health at risk.
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14 ."Individuals that have Staph.aureus in their nose before they undergo surgery are about seven times more likely to get a Staph.aureus surgical site infection."
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15 .Which is when you'll really need those antibiotics.
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16 .Thanks for the minute, for Scientific American's 60-Second Health. I'm Christopher Intagliata.
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