We all know that kissing can reduce stress, boost immunity, and improve our mood. But, according to recent studies, it may also be harmful to your health. It turns out that the person (or people) you kiss could be the reason behind anxiety and depression in your life.
Whether you’re single and casually dating, or in a stable relationship, kissing seems like an innocent pleasure. However, a recent study suggests that anxiety and depression can be transmitted through kisses, offering a new, unexpected perspective on the act of smooching.
The Surprising Link Between Kissing and Mental Health
A study conducted in Iran revealed that anxiety and depression can trigger the release of the stress hormone cortisol, which in turn disrupts the balance of bacteria in the mouth. This altered microbiome could have serious consequences for your health.
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In fact, the study found that a 10-second kiss could transfer up to 80 million bacteria. If one partner is dealing with poor mental health, such as anxiety or depression, the other partner might begin to experience the same symptoms—sometimes just six months later.
How Anxiety and Depression Spread Through Kissing
The research followed 268 newlywed couples, where one partner reported struggling with depression, anxiety, or sleep problems. The other partner reported good mental health. After six months, the “healthy” partners (mostly women) experienced a significant increase in anxiety, depression, and sleep difficulties.
Interestingly, while their partners showed less severe symptoms, it is believed that this could be because their minds were already adjusted to dealing with these mental health challenges.
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While the findings are intriguing, the researchers noted some limitations, such as the lack of consideration for underlying health conditions or other factors influencing the transfer of bacteria. Nevertheless, the study raises an important question: if you frequently kiss different partners, could the bacterial transfer affect someone with a healthier mental state more?
It seems that the act of kissing might not just be about romance—there could be more to it than we ever imagined.
This article was originally written in Spanish by Fernando Eslava in Cultura Colectiva.
