Stanford study links gut bacteria to age-related memory loss

Old mice got smarter when researchers tweaked their gut bacteria and stimulated the vagus nerve — restoring cognitive performance to young-animal levels, according to Stanford Medicine.

The study, published in Nature , traced the mechanism in detail. A bacterium called Parabacteroides goldsteinii proliferates as mice age and triggers the release of medium-chain fatty acids that set off an inflammatory immune response in gut myeloid cells. — Read the rest

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