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Light Exposure

Meaning

In the context of hormonal health, light exposure refers to the quantity, quality, and timing of electromagnetic radiation, primarily visible and non-visible light, that interacts with the human body, critically influencing the endocrine system. The timing of light exposure, particularly bright blue light, is the most powerful environmental cue for synchronizing the body’s internal biological clock, known as the circadian rhythm. Disruptions to the natural pattern of light and darkness, such as excessive blue light exposure at night, can significantly suppress the nocturnal secretion of the hormone melatonin, impacting sleep quality and metabolic regulation. Strategic light management is a vital component of chronotherapy and hormonal optimization.