What question did this study set out to answer?

Synthesize findings from observational and experimental literature evaluating the direct effects of artificial light at night (ALAN) on human physiological health and circadian regulation.

September 16, 2015Chronobiology International

Effects of artificial light at night on human health: A literature review of observational and experimental studies applied to exposure assessment

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Synthesize findings from observational and experimental literature evaluating the direct effects of artificial light at night (ALAN) on human physiological health and circadian regulation.
Conducted a comprehensive literature search across electronic databases for observational and experimental human studies on ALAN exposure published through August 2014.
Identified and reviewed 85 articles examining exposure metrics including indoor illumination habits, outdoor brightness, timing, and spectral wavelengths.
Observational studies linked outdoor ALAN levels, higher indoor light intensity, and nighttime lighting habits with increased risks of breast cancer.
Nighttime bright light exposure acutely suppresses melatonin secretion, lengthens sleep onset latency, and heightens alertness.
Circadian phase shifts and systemic circadian misalignment intensify with longer and later exposure, as well as with shorter wavelengths, driving potential cardiovascular, psychological, and metabolic dysfunction.

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Implication

Literature review reveals adverse endocrine, circadian, and oncologic outcomes from artificial light at night in humans, highlighting the need to evaluate light wavelength and timing.

Cite This Study

Cho et al. (2015) studied this question.

synapsesocial.com/papers/69da8f680f0ab7a47c835b41 https://doi.org/10.3109/07420528.2015.1073158

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Implication

Literature review reveals adverse endocrine, circadian, and oncologic outcomes from artificial light at night in humans, highlighting the need to evaluate light wavelength and timing.

Effects of artificial light at night on human health: A literature review of observational and experimental studies applied to exposure assessment

Key Points

Discussion

Implication

Cite This Study

Effects of artificial light at night on human health: A literature review of observational and experimental studies applied to exposure assessment

Key Points

Discussion

Implication

Cite This Study

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