London: Elderly humans’ brains react differently to chronic stress – a finding which may explain why older adults are always in a bad mood, according to a new study.Elderly humans are more vulnerable to stress than their youthful counterparts. "There is more low-level anxiety and depression," says Nancy Pachana of the University of Queensland in Brisbane, Australia.
Before the starting of the treatment, the two sets of rats had similar levels of the stress hormone, corticosterone. All the rats had higher levels of the hormone after two weeks, but the old rats had significantly more. The old rats also showed increased activity in areas of the brain associated with anxiety and decreased activity in regions linked with controlling emotions, reports New Scientist.The study has been published in Behavioural Brain Research. ANI
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