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In a new study, scientists looked at 21 couples and measured how many microbes were exchanged when they locked lips. Now, Dutch scientists suggest that the millions of germs swapped during a second smooch could determine your romantic fate with a partner. For perspective, catching a normal infection takes aboutmicrobes, Jason Tetroa Canadian microbiologist and bestselling author, told Global News. Our mouths are cesspools of bacteria, used to break down enzymes, digest food and stave off infection.
We each have an individual microbiome — call it a collection of hundreds of types of bacteria. It might sound really gross but if the bacteria from the other person harmonizes with spit swapping bacteria, your immune system is all good. Your immune system is rejecting that person as a possible mate. Chalk it up to biological chemistry, Tetro suggests. It even applies to swapping germs from other parts of your body.
The Dutch researchers — out of the Netherlands Organisation for Applied Scientific Research — note that primates, fish and even birds have mouth-to-mouth contact. For the study, they recruited 21 couples, who were asked about their daily kissing habits.
Turns out, couples that took to French kissing often shared similar microbiota.
The scientists also fed one half of the couple probiotic yogurt before smooching. When the couple French kissed, the saliva on the receiving end contained three times the probiotic bacteria that it had before the kiss.
This is how the researchers estimate that about 80 million bacteria are swapped in a mere 10 seconds. And Tetro suggests swapping germs can even be a litmus test for a potential partner. The Dutch study was published Monday in the journal Microbiome.
Read the full findings here. World Canada Local. Swapping spit and testing chemistry: How kissing, germs help you pick your partner.
Full Menu Search Menu. Close Local your local region National. Search Submit search Quick Search. Comments Close comments menu. Video link. Close X. Click to scroll back to top of the Back to top. By Carmen Chai Global News. Posted November 18, pm. Updated April 12, pm.
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Swapping spit and testing chemistry: How kissing, germs help you pick your partner