The male reproductive system is regulated by a finely coordinated endocrine network known as the hypothalamic–pituitary–testicular (HPT) axis. This axis governs testosterone production and spermatogenesis through hormonal signaling pathways that maintain physiological balance.
Gonadotropin-releasing hormone (GnRH) is secreted in a pulsatile manner by the hypothalamus, stimulating the anterior pituitary gland to release luteinizing hormone (LH) and follicle-stimulating hormone (FSH). LH activates Leydig cells to produce testosterone, while FSH stimulates Sertoli cells, which support germ cell development.
Testosterone exerts negative feedback on the hypothalamus and pituitary, ensuring hormonal stability. Disruptions in this axis may arise from systemic disease, obesity, pituitary disorders, genetic conditions, or chronic stress.
Comprehensive evaluation of male endocrine health requires biochemical assessment, clinical correlation, and, when necessary, imaging studies. A thorough understanding of endocrine physiology is essential for accurate diagnosis and targeted treatment erotic in andrology.
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