The effects of sleep and light at night on melatonin in adolescents
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Screen media use near bedtime may act as a direct displacement of sleep.
“screen media use near bedtime may act as a direct displacement of sleep”
From Screen Media Overuse and Associated Physical, Cognitive, and Emotional/Behavioral Outcomes in Children and Adolescents: An Integrative Review (2022) · cites this paper as Hersh, Sisti, Richiutti, & Schernhammer, 2015
The Sleep habits section reports that some adolescents used electronics for more than an hour after turning off the lights and before falling asleep. That supports screen use near bedtime, but the paper does not establish that this use displaced sleep; its Discussion focuses on melatonin rather than that proposed mechanism. No page number is available in our copy. (LLM, conf=0.78)
Experimental — accuracy not yet measuredScreen media use near bedtime may suppress melatonin production by blue light emission from electronic devices, leading to subsequent circadian rhythm delay.
“suppress melatonin production by blue light emission from electronic devices that leads to subsequent circadian rhythm delay (Hersh, Sisti, Richiutti, & Schernhammer, 2015).”
From Screen Media Overuse and Associated Physical, Cognitive, and Emotional/Behavioral Outcomes in Children and Adolescents: An Integrative Review (2022) · cites this paper as Hersh, Sisti, Richiutti, & Schernhammer, 2015
The Discussion (page not provided) says blue-light wavelengths suppress melatonin, electronic devices emit light in that range, and LED displays may suppress melatonin with sufficiently long exposure. It does not establish that bedtime screen use causes a subsequent circadian delay; in this adolescent sample, electronic use after lights out was not a significant predictor of urinary melatonin levels. (LLM, conf=0.86)
Experimental — accuracy not yet measuredScreen media use near bedtime may cause physiological arousals that make it more difficult for children and adolescents to relax.
“cause physiological arousals that make it more difficult for children and adolescents to relax”
From Screen Media Overuse and Associated Physical, Cognitive, and Emotional/Behavioral Outcomes in Children and Adolescents: An Integrative Review (2022) · cites this paper as Hersh, Sisti, Richiutti, & Schernhammer, 2015
The Discussion addresses screen light, melatonin suppression, and electronic-device use after lights out, but not physiological arousal or difficulty relaxing. Searches for those effects found no passage in our copy that addresses the claim. (LLM, conf=0.75)
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References 42 · Cited by 13
- Authors
- Hersh, C., Sisti, J., Richiutti, V., & Schernhammer, E.
- Affiliations
- Brown University (US)
- Harvard University (US)
- University of Cincinnati (US)
- Brigham and Women's Hospital (US)
- Corresponding author
- Sisti, Julia
- Venue
- Hormones
- Published
- 2015-07
- Volume
- 14
- Issue
- 3
- Pages
- 399-409
- ISSN
- 1109-3099 (ISSN-L)
- 2520-8721
- OpenAlex
- W4242130581
- Cited by
- 13
- References
- 42
- Citations by year
- 2026: 2 · 2025: 1 · 2024: 1 · 2023: 1 · 2022: 2 · 2021: 1 · 2020: 1 · 2016: 3 · 2015: 1
- FWCI
- 0.74
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- HORMONES (publishedVersion)
- Funders
- National Institutes of Health (CA098566)
- National Cancer Institute (CA0090001, R25CA098566, T32 CA0090001, CA098566)
- Topics
- Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
- Physical Sciences › Environmental Science › Global and Planetary Change › Impact of Light on Environment and Health
- Keywords
- melatonin, adolescents, nocturnal light exposure, sleep duration, sleep disruption, 6-sulfatoxymelatonin, urinary biomarkers, circadian rhythm, digital technology use
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