What You Get When You Kiss

Carl Lowe | Jan 31, 2013 | Comments 0

An intense kiss is more than a mere sign of affection. It’s also an exchange of mucus, bacteria and… a whole lot more, according to Slovakian research.

A study at Comenius University shows that saliva in your mouth retains DNA evidence of whom you’ve been smooching. That DNA could, theoretically, be used as proof of assault or, perhaps, infidelity under certain circumstances.

In the study, researchers had participants lock lips for two minutes or more. They found that evidence of DNA transference from mouth to mouth was still detectable for at least an hour.