Jun 18, 2014 7:14 AM by Lindsay MacLeod, KSBY News
Sustained, high levels of stress hormones may lead to short-term memory loss.
That's according to a study involving rats.
Researchers at the University of Iowa found older rats with naturally high levels of cortisol performed worse on tests of their short-term memory, and tissue samples from their brains revealed they had fewer connections in the area that handles short-term memory.
Researchers say stress hormones are just one of many factors that may contribute to memory loss in old age.
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