Hormonal
Exposure to artificial light at night (ALAN), particularly blue-shifted light from LEDs and screens, disrupts circadian rhythms and is associated with increased risk of mood disorders, including depression and anxiety, through direct neural pathways and indirect hormonal/sleep disruptions.
To protect your mood and mental health, minimize exposure to bright, blue-rich light (LEDs, screens) in the hours before bed. Use dim, warm-colored lights (red/orange) if you must use electronics, and consider blue-light-blocking glasses if you work night shifts. Prioritize darkness during sleep to support natural melatonin production and circadian alignment.
Exposure to artificial light at night is linked to risk of breast cancer, metabolic disorders and psychiatric and behavioral disorders... This review focuses on human exposure to light at night and its consequences for circadian rhythms and mood.
Why this rating
The paper is a review citing numerous human epidemiological studies, rodent models, and mechanistic studies, providing strong converging evidence.
Source
Timing of light exposure affects mood and brain circuits
Tracy A. Bedrosian et al. · Translational Psychiatry · 2017
DOI 10.1038/tp.2016.262
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