A new scientific study has found that a single intimate kiss can transfer nearly 80 million bacteria between partners, underscoring how deeply human interactions shape biological health.

The research, published in the journal Microbiome, shows that couples who kiss frequently tend to develop strikingly similar oral microbiomes over time. According to scientists, this microbial exchange is not harmful; instead, most of the bacteria shared are harmless or beneficial, contributing to a healthier and more stable mouth environment.

Experts say a diverse oral microbiome supports stronger immunity, improved nutrient processing, and better overall oral balance.

Beyond its emotional and hormonal impact, researchers note that kissing also creates a biological bond, subtly syncing partners on a microscopic level. Over time, couples effectively begin to share one microbial ecosystem — evidence that intimacy influences both the heart and the biology behind it.

The findings add a new dimension to the science of human relationships, revealing that every kiss carries both affection and a burst of microbial life.

For Advert, Event Coverage/Press Conference Invite, Story/Article Publication & Other Media Services
Contact Us On WhatsApp
Send Email To: citizennewsng@gmail.com
Visit Citizen NewsNG To Read More Latest and Interesting News Across Nigeria and the World