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Gut Bacteria May Affect Brain Chemistry, First Human Study Finds

Gut Bacteria May Affect Brain Chemistry, First Human Study Finds

Summary

A new study found links between gut bacteria and brain chemistry in humans. Researchers discovered that certain microbes in the digestive system may influence how brain cells communicate, suggesting a close connection between the gut and the brain.

Key Facts

  • The study was published in the journal Molecular Psychiatry.
  • Scientists mapped connections between the gut microbiome (bacteria in the digestive tract) and brain neurochemistry (chemical processes in the brain).
  • The "gut-brain axis" is the system that connects the digestive system with the brain.
  • The inferior occipital gyrus, a brain region involved in vision, showed strong links to gut bacteria.
  • Specific gut microbes were associated with brain chemicals that help neurons communicate.
  • Gut bacteria may influence many neurochemical systems, not just one.
  • Earlier research connects gut microbes with mental conditions like depression, anxiety, and autism, but cause and effect are still unclear.
  • Experts recommend eating a varied diet high in fiber to support gut bacteria and brain health.
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