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Evening Blue Light Restriction

Meaning

Evening Blue Light Restriction is a chronobiological intervention involving the deliberate minimization of exposure to short-wavelength visible light, typically emitted by electronic screens, during the hours leading up to habitual sleep. This practice is clinically crucial because blue light effectively suppresses the nocturnal rise of the hormone melatonin, which is essential for initiating and maintaining restorative sleep cycles. It is a fundamental component of optimizing circadian rhythmicity and subsequent hormonal synchronization.