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Light Therapy

Meaning

The controlled exposure of an individual to specific wavelengths and intensities of visible or non-visible light for a therapeutic effect, primarily to regulate circadian rhythms, enhance mood, and modulate specific cellular processes. This non-pharmacological intervention is used to treat seasonal affective disorder, non-24-hour sleep-wake rhythm disorder, and optimize the timing of hormonal secretion. Precise timing and spectrum are critical for efficacy.