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Balanced Gut Microbiome: Key to Mood and Immunity

12/22/2025

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Story summary
  • The gut microbiome hosts up to 100 trillion microbes and significantly influences mood, immunity, and energy balance.
  • It produces about 90% of the body's serotonin and coordinates 70% of immune responses through IgA antibodies.
  • A balanced microbiome generates short-chain fatty acids that support gut barrier integrity and prevent chronic inflammation.
  • Dysbiosis disrupts these functions and can lead to energy depletion and mood disturbances, and consuming a fiber-rich diet supports diversity.