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What is the relationship between PTSD and size of the hippocampus?

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In people with PTSD (post traumatic stress disorder), the size of the hippocampus is decreased. It appears that the hippocampus receives damage from the traumatic stress, which is mediated by the increase in stress hormones that is released into the bloodstream.
answered May 2, 2016 by drcarlo (294,430 points)