Something to think about when you make-out.
A 10-second kiss can transfer as many as 80 million bacteria!
Researchers from the Netherlands Organization for Applied Scientific Research (TNO) asked 21 couples to kiss and tell. The pairs filled out questionnaires about their past smooching habits, including the frequency of their French kisses.
Scientists also swabbed their tongues and saliva to look at the composition of the oral microbiota, which are the microorganisms that live in your mouth.
For the controlled part of the experiment, one half of each pair drank a kind of probiotic yogurt that contained specific bacteria. They then gave their partners an "intimate" kiss.
Researchers calculated that 80 million bacteria were transferred during a 10-second kiss.
Oh man, I should be dead right now.