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HPG Axis Feedback

Meaning

HPG Axis Feedback describes the complex, bidirectional regulatory loop involving the Hypothalamus, Pituitary gland, and Gonads (HPG), which is the master control system for reproductive and sexual hormone production. This intricate system operates primarily through negative feedback mechanisms, ensuring that the circulating levels of sex hormones remain within a narrow, physiological range necessary for homeostasis. The integrity of this communication axis is fundamental to fertility, sexual function, and overall endocrine health throughout the lifespan.