microorganism

Your biology protecting you from the billions of microorganisms that want to consume you, and from your own perverted cells that turn into cancer.

The gut is home to around 40 trillion microorganisms - bacteria, viruses, fungi - and they constantly interact with our brain through many millions of nerves, including the vagus nerve.

The gut isn't just responsible for digestion - it's a teeming world of microorganisms that handles many of our body's processes.