What happens when I get a concussion? Do concussions add up?

Concussions can be dramatic or go almost unnoticed, but all cause some amount of long-term damage. Recent studies have shown that concussions may affect the white matter in the brain: the superhighways that carry information from one brain area to another. People who have previously had concussions are at a greater risk of future concussions, and a study from Purdue University found that even football players who didn’t get concussions suffered a small decline in performance on some cognitive tests for each impact on their helmets.

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