The Science of Kissing


The Science of Kissing
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A kiss is not just a kiss. A kiss can be a hello or a goodbye, a symbol of parental love and affection, a gesture that soothes and reassures, or a passionate expression of love and desire. But why do we kiss and what does it really reveal about our partner and the state of our relationship? There’s more to the science of kissing than you might think.

The compatibility check

New research by eHarmony found that 4 in 6 Aussies believe that the way someone kisses says a lot about their potential sexual chemistry and whether they’ll be a good match, and rightly so. There’s more to the science of kissing than you might think.

Kissing provides a potent exchange of sensory information that reveals telling clues about genetic compatibility, romantic compatibility, your kissing partner’s overall health and immunity, and whether they’re after a casual fling or a relationship.

During a passionate kiss, we receive information from the taste and smell of our kissing partner’s breath, saliva and skin, the health of their teeth, their touch, their pheromones (or airborne signals), and from the semiochemicals in their mouth which mix with our own saliva. These clues affect our level of attraction and help us to make a subconscious decision about our compatibility.

Master the body language of attraction

READ MORE: Find out how to get them to make the first move.


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Your feel good relationship boost

What does the science of kissing tell us about our favourite pastime? A kiss affects us emotionally, biologically and psychologically and provides the ultimate feel good relationship boost, activating our emotional brain associated with love and passion, and sending our neural networks into overdrive. A passionate smooch releases a surge of neurotransmitters and hormones including dopamine, serotonin, phenylethylamine and norepinephrine. This chemical cocktail and in particular the rush of dopamine, increases attraction, and sends us into a euphoric (and slightly obsessive) high.

READ MORE: The Body Language of Kissing: 9 Signs They Want to Kiss You

Most people underestimate the power of puckering up, but kissing does more than just making us feel intoxicatingly good. It’s been shown to improve relationship satisfaction and self-esteem, make us feel more relaxed, increase attraction and sex drive, reduce levels of stress and conflict and boost the cuddle hormone oxytocin helping you bond and feel connected. Couples that increase the frequency of their kisses also tend to have lower levels of conflict.

Are you on the same page?

The pash (or lack thereof) and kissing style can also reveal whether you’re both after the same thing in a relationship… or not. In many ways courtship gestures and rituals resemble the bond between a mother and child. As we soothe each other with gentle kisses, tender caresses, cling to one another and gently sway in each other’s arms. It’s this nurturing embrace that helps build a sense of trust and security and communicates affection and love.

So, if they’re always going straight for the passion fuelled snog, but there’s little eye contact or tenderness in their touch, or they avoid kissing altogether and attempt to move straight into physical intimacy, chances are they’re after a casual fling and not a long term relationship.


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Originally published on eHarmony 

About the Author

Katia Loisel is an internationally recognised dating, relationship and body language expert with over 19 years experience in the TV Industry. She is the co-author of How To Get The Man/Woman You Want and has conducted a widely published five-year global study into dating and mating patterns.

A sought after media commentator, spokesperson and host, Katia has been interviewed over 900 times by media outlets worldwide. Her production credits include programme creation, development and production of various dating and relationship related TV shows for the Australian and US market and a global online ‘how to’ campaign for the dating and relationship market that generated over 12 million views.

Katia is also the Founder of The Love Destination, and is on a mission to empower and inspire, bringing more love and good news into the world.