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1 .This is Scientific American 60-Second Health. I'm Dina Fine Maron. Got a minute?
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2 .A passionate kiss shares much more than intimacy.
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3 .A single 10-second smooch can transfer tens of millions of bacteria from one partner to the other.
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4 .That's the finding from a study in the journal Microbiome.
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5 .More than 700 different bacteria are estimated to live in the human mouth.
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6 .To find out how macking mixes microbes, Dutch scientists asked 21 couples to French kiss.
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7 .Intimate partners already have more of the same bacteria in their mouths than do unrelated individuals,
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8 .because of the couple's shared habits and environment.
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9 .But kissing really expedites the bacterial blending.
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10 .As part of the study, one member of the couple consumed a probiotic yogurt drink loaded with certain bacteria.
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11 .Saliva samples and tongue swabs revealed that after the couples puckered up,
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12 .about 80 million bacteria from the drink moved mouth-to-mouth.
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13 .The salivary bug exchange was extensive but the work does not yet tell us why certain swapped bacteria either stuck around or were more transient.
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14 .Answering that question could help with future medical interventions aimed at microbes.
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15 .What the research did show: although the bacteria in saliva were easily altered, bacteria living on tongues tended to stay put.
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16 .Unlike certain frog-princes, those critters were less prone to change because of a mere kiss.
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17 .Thanks for the minute, for Scientific American 60-Second Health. I'm Dina Fine Maron.
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