Living with friends or a partner may subtly alter your gut bacteria

Health & Fitness
10 Apr 2026 • 8:23 PM MYT
The Independent
The Independent

The world’s most free-thinking newspaper

image is not available

  • Living with friends or a partner may subtly alter an individual's gut bacteria, according to scientists from the University of East Anglia (UEA).
  • Daily interactions such as hugging, kissing, and sharing food preparation spaces are believed to encourage the exchange of gut microbes.
  • A study on Seychelles warblers, small island birds, provided clear evidence that social closeness, not just a shared environment, drives the exchange of gut bacteria.
  • The research found that birds spending significant time together, like breeding pairs, shared more anaerobic gut bacteria, which can only spread through direct, close contact.
  • This sharing of beneficial anaerobic bacteria among household members could potentially strengthen immunity and improve digestive health.

IN FULL