This is the scientific study dedicated to understanding the complex feedback loops governing the secretion, clearance, and physiological impact of the glucocorticoid hormone, cortisol. It examines the HPA axis dynamics, receptor sensitivity, and metabolic consequences of cortisol exposure across various time scales. Precise regulation is paramount for maintaining metabolic stability and immune modulation.
Origin
The science traces its roots to early endocrinology studies identifying the adrenal cortex’s role in stress response and metabolism. The term is a composite: “Cortisol,” the primary human glucocorticoid, coupled with “Regulation Science,” denoting the systematic study of its homeostatic control mechanisms. It is central to understanding chronic stress physiology.
Mechanism
Cortisol regulation operates via the HPA axis negative feedback loop, where circulating cortisol inhibits CRH and ACTH release from the hypothalamus and pituitary, respectively. Optimal function requires appropriate diurnal rhythmicity, with high morning levels tapering toward evening. Disruption, often seen in chronic stress states, leads to flattened diurnal curves or generalized hypercortisolemia, impacting insulin sensitivity and overall anabolic balance.
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