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HPA Axis Stability

Meaning

HPA Axis stability refers to the state of robust, adaptive function within the Hypothalamic-Pituitary-Adrenal axis, allowing for a swift, proportional cortisol response to acute stressors followed by an efficient return to baseline homeostatic function. This stability is essential for maintaining metabolic health, immune resilience, and psychological well-being, as chronic instability can lead to either hyper- or hypocortisolism. Clinical assessment of this stability often involves dynamic testing of cortisol and ACTH release throughout the diurnal cycle.