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![A team of British scientists say they have discovered the reason the human habit of kissing has evolved. And, no, it’s not just ‘cuz it feels nice.
From Popular Science:
“Cytomegalovirus, which lives in human saliva, is generally innocuous, but when introduced during a pregnancy it can be extremely dangerous, killing unborn babies or causing birth defects like deafness or cerebral palsy. However, if cytomegalovirus is introduced to a woman in small doses before she conceives, she will build an immune resistance to it. Optimally, kissing the same male for six months prior to pregnancy gives the woman’s immune system the practice it needs to render cytomegalovirus impotent.
“The escalation of a physical relationship also aids in the immunity-building process. That initial, innocent peck delivers just a small amount of the virus to the woman, reducing her chances of becoming seriously ill. As the relationship ramps up, so does the face time with her mate, delivering stronger and stronger doses as the snogging becomes more, ahem, passionate.”
Also, bonus points to the British scientists for calling it “snogging.”
[Source: io9.com via Daily Mail via Popular Science]](http://25.media.tumblr.com/tumblr_ksjq7bHrRG1qa2hzgo1_400.jpg)
A team of British scientists say they have discovered the reason the human habit of kissing has evolved. And, no, it’s not just ‘cuz it feels nice.
From Popular Science:
“Cytomegalovirus, which lives in human saliva, is generally innocuous, but when introduced during a pregnancy it can be extremely dangerous, killing unborn babies or causing birth defects like deafness or cerebral palsy. However, if cytomegalovirus is introduced to a woman in small doses before she conceives, she will build an immune resistance to it. Optimally, kissing the same male for six months prior to pregnancy gives the woman’s immune system the practice it needs to render cytomegalovirus impotent.
“The escalation of a physical relationship also aids in the immunity-building process. That initial, innocent peck delivers just a small amount of the virus to the woman, reducing her chances of becoming seriously ill. As the relationship ramps up, so does the face time with her mate, delivering stronger and stronger doses as the snogging becomes more, ahem, passionate.”
Also, bonus points to the British scientists for calling it “snogging.”
[Source: io9.com via Daily Mail via Popular Science]
