Coffee alters gut microbiota, may protect cognition: UCC neurobiologist

A University College Cork neurobiologist reports that habitual coffee consumption is associated with distinct gut microbiota profiles and potential cognitive protection, based on comparisons of consumers and non-consumers. The findings are preliminary and the causal mechanism—whether caffeine or polyphenols drive the effect—remains uncertain. This adds to a growing body of observational evidence linking diet to brain health, but no clinical implications are established.

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