Your Gut Has a "Second Brain" That Influences Mood

The enteric nervous system (ENS) in your digestive tract contains over 100 million neurons, operating independently of the central nervous system. It directly impacts mood, stress, and overall well-being, earning it the nickname "second brain."

Source

https://www.hopkinsmedicine.org/health/wellness-and-prevention/the-brain-gut-connection

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Published: March 25, 2026
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Biology Weird Health Gut Brain Nervous System Digestive System Neurons Mental Health

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