Definition of allostasis
: the process by which a state of internal, physiological equilibrium is maintained by an organism in response to actual or perceived environmental and psychological stressors Therefore, allostasis is the process that keeps the organism alive and functioning, i.e. maintaining homeostasis or “maintaining stability through change” and promoting adaptation and coping, at least in the short run. — Bruce S. McEwen, Neurobiology of Aging, 2002
allostatic\ˌa-lō-ˈsta-tik\ play adjective an allostatic state allostatic systems
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