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The effect of evening light on circadian-related outcomes: A systematic review.
Evening light’s effects on the body’s internal clock and related rhythms
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Abstract
Evening light exposure may improve shift workers' sleep and performance.
- Evening light, defined as 16:00-22:00, could delay melatonin release, body temperature, and sleepiness.
- Exposure during this period may enhance sleep quality and duration, memory, and work performance.
- Effects on mood were mixed, with no significant changes in sleepiness or negative outcomes noted.
- Confidence in findings varies, being moderate for physiological effects and very low for mood.
- Future research may explore the effectiveness and safety of evening light compared to night-time exposure.
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