How microorganisms control our emotions

We live in a microbial world. Microbes have lived on Earth for hundreds of millions of years longer than humans, and at all times our body has interacted with their environment. The human microbiota is a collective term for the trillions of microorganisms that live in the gastrointestinal and genitourinary tracts, lungs, and on the surface of the skin. Microorganisms are involved in many physiological and biochemical processes in our body. Including those that influence our behavior.

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