Alzheimer's risk tied to concussions in some

December 26, 2013 9:45 PM

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Alzheimer's risk tied to concussions in some

Having a serious concussion could be a risk factor for developing Alzheimer's decades later – though not everyone with head trauma will lose their memory, a new study suggests.

A team from the Mayo Clinic in Rochester Minn., conducted brain scans on 448 older Minnesotans who had no signs of memory problems and 141 who did. Roughly 17% in both groups had had a brain injury earlier in life involving some loss of consciousness or memory.

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