Your Second Brain: The Enteric Nervous System Explained
With over 100 million neurons, your gut's nervous system operates independently and communicates constantly with your brain.
The gut-brain axis is a bidirectional communication network linking the enteric nervous system of the gastrointestinal tract with the central nervous system. Your gut contains over 100 million neurons and houses trillions of microorganisms that produce neurotransmitters, regulate inflammation, and influence everything from mood to cognitive function. The microbiome is increasingly recognized as a 'second brain' that plays a critical role in mental health and overall performance.
Science Snapshot
The gut microbiome contains approximately 39 trillion microorganisms. Research has shown that germ-free mice exhibit altered stress responses and anxiety-like behaviors, which can be reversed by introducing specific bacterial strains.
With over 100 million neurons, your gut's nervous system operates independently and communicates constantly with your brain.
Emerging research reveals that specific bacterial strains can reduce anxiety and depression symptoms as effectively as some medications.
Not all probiotics are created equal. Learn which foods and supplements have the strongest evidence for improving gut health.