Stroke victims with busy immune responses may also see mental declines

A small study hints at a way to predict who might fare worse among survivors

brain scans

BRAIN ATTACK  Most strokes in the United States are caused by a blood clot in the brain. Now scientists have linked a person’s immune response shortly after a stroke with a later loss in cognitive ability.

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How active a person’s immune system is soon after a stroke may be tied to later mental declines, a new study finds.