When you’re in the middle of a kiss, the last thing you’re likely to think about is the other person’s saliva, much less what may or may not be transferring between you. But turns outs there’s a whole lot going on inside our mouths, and it can make theact of kissing even more interesting than you might think.
Kissing Can Boost Your Immune System
With a single kiss, you’re coming in contact with up to 80 million bacteria. And in doing so, it may help strengthen your immune system, so you’re less likely to catch colds.
It Can Transfer Testosterone
If you’re kissing a male, they could be transferring some of their testosterone to you, according to an expert. And that can make you more attracted to them. Testosterone is an anabolic sex hormone that can incite sexual drive, so scientists theorize that unconsciously, your testosterone-producing partner may be trying to get you in the mood. Pretty interesting, right?
It Serves As A “Bacterial Litmus Test
When kissing someone, your body is assessing your chemistry via their saliva. According to experts, getting a French kiss from someone is like giving them a bacterial litmus test — your body’s microbiome can immediately tell whether or not their germs are in tune with yours.
Spit Makes You Saltier
When you kiss, enough salt is transferred in the process that you technically become saltier, by about 0.45mg, says an expert. The amount of saliva obtained from your partner during an average kiss also contains 9mg of water, 0.7 mg of fats and 0.7 mg of proteins.
You Can Swap Morning Breath
Morning breath can be transferred through saliva.” So if kiss someone who just woke up, be prepared to feel a little less fresh.
Kissing Can Be Good For Your Teeth
The excess saliva that’s produced right before a kiss can even, in some small way, be good for your dental hygiene. “A kiss a day won’t keep the dentist away,” Smith says. “But the sudden increase of saliva in your mouth before a kiss ‘flushes’ out the stagnant bacteria responsible for tooth decay.”