Skip to main content

Evening Light Restriction

Meaning

Evening Light Restriction is a deliberate chronobiological strategy involving the minimization of exposure to bright, short-wavelength light, particularly blue light, during the hours leading up to the intended sleep onset. This behavioral intervention is clinically employed to prevent the unwanted suppression of endogenous melatonin secretion, which is crucial for initiating and regulating the sleep cycle. Adopting this practice is essential for reinforcing the body’s natural nocturnal hormonal transition and promoting optimal circadian alignment. The goal is to send a clear signal of impending darkness to the central biological clock, supporting robust sleep and hormonal health.