The Science Of Sick, Part I: Why We Kiss

Turns out that kissing is a biological imperative: Science shows it helps boost our immunities to certain diseases.

Want to beat the Cytomegalovirus, a bug that is carried in saliva and is usually harmless but can cause major problems during pregnancy. So here’s what science says: “Female inoculation with a specific male’s cytomegalovirus is most efficiently achieved through mouth-to-mouth contact and saliva exchange, particularly where the flow of saliva is from the male to the typically shorter female.”

This post was created by a user and has not been vetted or endorsed by BuzzFeed's editorial staff. BuzzFeed Community is a place where anyone can post awesome lists and creations. Learn more or post your buzz!

 
  Your Reaction?
  REACT WITH GIF
 

    Starting soon, you'll only be able to post a comment on BuzzFeed using a Facebook account or via our app. If you have questions or thoughts, email us here.

    Contributions

    Hot Buzz

    Australia Post CEO Resigns Weeks After The Controversy Over His $5.6 Million Salary

    What’s Your Best Oral Sex Advice?

    collection
    Now Buzzing