Butyrate — The Gut-Brain Axis Connector That Influences Mood and Cognition

Dec 29, 2025
7 mins

Episode Description

  • Butyrate, produced by gut bacteria when they ferment dietary fiber, acts as a signaling molecule in the gut-brain axis, influencing stress, pain tolerance, immunity, and brain health
  • Through multiple mechanisms, including specific enzyme inhibition and NF-κB pathway regulation, butyrate reduces neuroinflammation and protects against neurodegenerative conditions like Alzheimer's and Parkinson's disease
  • Butyrate influences key neurotransmitters including GABA, serotonin, and dopamine, while also increasing brain-derived neurotrophic factor (BDNF), which supports neuronal growth and cognitive function
  • The vagus nerve serves as a communication highway between the gut and the brain, transmitting signals about butyrate levels that affect mood regulation, stress response, and immune function
  • Optimizing gut health through dietary fiber and homemade fermented foods helps promote butyrate production and maintain a healthy gut-brain connection
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