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Study reveals immune driver of brain aging

Katrin Andreasson is the senior author of a study that identifies a particular set of immune cells as a key driver of mental aging.
Steve Fisch
Jan 20 2021
Fellow, Research, Stanford, Students

Suppose Smokey Bear were to lose it and start setting forest fires instead of putting them out. That roughly describes the behavior of certain cells of our immune system that become increasingly irascible as we grow older. Instead of stamping out embers, they stoke the flames of chronic inflammation.

Biologists have long theorized that reducing this inflammation could slow the aging process and delay the onset of age-associated conditions, such as heart disease, Alzheimer’s disease, cancer and frailty, and perhaps even forestall the gradual loss of mental acuity that happens to nearly everyone.

Yet the question of what, exactly, causes particular cells of the immune system to kick into inflammatory overdrive has lacked a definitive answer.

Now, Stanford Medicine researchers think they have one. If their findings in old mice and in human cell cultures apply to actual humans, they could presage the pharmaceutically managed recovery of older people’s mental abilities.

Study lead author, Paras Minhas, is a 2018 Lieberman fellow.

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