Aging alters gut bacteria and weakens gut-brain communication in mice, according to research published in health science coverage.
Microbiome changes correlated with cognitive decline markers in aged animals. The gut-brain axis — signaling between intestinal microbes and the nervous system — has become a major focus of neuroscience research.
Mouse studies do not always translate to humans, but parallel human microbiome shifts with age have been documented. Probiotic and dietary interventions are under study as possible moderators.
Scientists emphasized that causation versus correlation remains under investigation in human populations.
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Sources:
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