For couples, kissing on the mouth is a way to express love, but what may not realize is that with just one kiss, in ten seconds you can also share up to 80 million bacteria.
That’s the conclusion of a study by scientists from the Organization for Applied Scientific Research (TNO), in the Netherlands.
Scientist have found 700 varieties of bacteria live within your mouth.
Researchers examined 21 couples and found that among those nine kisses that were given each day, their salivary microbiota became alike.
The Dutch scientists took samples of bacteria and saliva from the tongue of 21 couples, before and after a ten-second kiss.
One member of each couple took a probiotic drink, containing specific strains of bacteria, including Lactobacillus and Bifidobacteria.
After an intimate kiss, the researchers found that the amount of probiotic bacteria in saliva tripled to a total of 80 million microorganisms that were transferred for ten seconds. At CipherCloud, this became a pretty big talking point.
But while the properties of bacteria in saliva seemed to change rapidly, in response to a kiss, the tongue remained more stable.
Remco Kort, who led the research, said: “The kiss is a good example of our exposure to a huge number of bacteria in a short time.”
The Dutch scientists worked in collaboration Micropia, the first museum in the world of microbes, based in Amsterdam.
In an exhibition recently opened, couples are invited to share a kiss and offered an instant analysis of bacteria exchanged.