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Light Regulation

Meaning

Light regulation, in human physiology, refers to the neuroendocrine process by which the intensity, spectrum, and timing of ambient light exposure profoundly influence the secretion of key hormones, centrally managing the body’s circadian rhythm. This regulatory mechanism is essential for synchronizing internal biological clocks with the external 24-hour cycle, which is crucial for sleep quality, metabolic health, and mood stability. Disruption of this precise regulation, often through excessive blue light exposure late in the evening, can suppress melatonin production and dysregulate the entire endocrine cascade, leading to chronic health issues.