Neuroendocrine Aging describes the progressive, age-related decline and dysregulation of the intricate communication and function between the central nervous system and the endocrine system. This physiological process is characterized by distinct alterations in the pulsatility, amplitude, and overall secretion of key regulatory hormones, such as growth hormone, DHEA, and gonadal steroids. The resulting systemic hormonal shifts contribute significantly to the phenotypical changes associated with aging, including sarcopenia, metabolic slowdown, and changes in mood and cognitive function.
Origin
This term is a fusion of “neuroendocrine,” referring to the integrated system of neural and hormonal control, and “aging,” the universal process of growing old and experiencing biological decline. It emerged from gerontology and endocrinology research in the late 20th century, recognizing that the decline of central regulatory centers, particularly the hypothalamus and pituitary, is a primary, upstream driver of systemic aging. This concept posits that aging is not just a peripheral process but one initiated and modulated by the central control systems.
Mechanism
The mechanism involves a gradual reduction in the sensitivity of peripheral receptors to circulating hormones and, critically, a change in the rhythmic signaling patterns from the central nervous system. For example, the hypothalamus may secrete less Gonadotropin-Releasing Hormone (GnRH) or Growth Hormone-Releasing Hormone (GHRH), leading to reduced downstream pituitary and gonadal output. This central dysregulation disrupts the crucial homeostatic feedback loops, resulting in the systemic hormonal declines known as somatopause, andropause, or menopause, thereby impairing tissue maintenance and cellular repair.
Lifestyle is the essential foundation for hormonal health; clinical protocols precisely recalibrate systems that diet and exercise alone cannot fully restore.
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