Psychology / Psych 1049 · Atom · ~20 seconds
The HPA Axis and Cortisol
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The hypothalamic-pituitary-adrenal axis releases cortisol during stress, mobilizing energy and suppressing non-urgent functions.
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Cortisol rises within minutes of a stressor and stays elevated under chronic stress.
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Cortisol's costs come from duration, not from release. The acute response is adaptive.