What’s in a Color? The Unique Human Health Effects of Blue Light
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Short wavelengths, perceived as blue color, are the strongest synchronizing agent for the circadian system that keeps most biological and psychological rhythms internally synchronized.
“Short wavelengths, perceived as blue color, are the strongest synchronizing agent for the circadian system that keeps most biological and psychological rhythms internally synchronized.”
From The inner clock-Blue light sets the human rhythm (2019) · cites this paper as [32]
The opening section says blue light resets the human circadian clock more efficiently than other visible wavelengths, and “Blue Light Special” calls blue wavelengths the most important for entrainment. “Unraveling the Mysteries of Circadian Rhythm” describes sleep/wake and physiological rhythms, but the paper does not establish that the circadian system keeps *most biological and psychological rhythms* internally synchronized. Page numbers are unavailable in our copy. (LLM, conf=0.82)
Experimental — accuracy not yet measuredBlue light may be more effective treatment for seasonal affective disorder than bright light.
“The literature on the efficacy of blue light for treating this disorder is just now beginning to develop, but research on the efficacy of blue light to suppress melatonin suggests that exposure to blue light might be more effective treatment.”
From The inner clock-Blue light sets the human rhythm (2019) · cites this paper as [32]
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Mahmood, B., Omeroglu, F. B., Abbasi, E., & Li, Y. (2023) · Lecture notes in computer science · doi:10.1007/978-3-031-35392-5_10
Khan, A. (2025) · SSRN Electronic Journal · doi:10.2139/ssrn.5068052
Inabu, Y., Takakura, Y., Shinohara, Y., et al. (2025) · SSRN Electronic Journal · doi:10.2139/ssrn.5223335
Blind Mice, African Clawed Frogs, and the Missing Link Between Circadian Rhythms and Psychiatry
Saali, A., Ross, D. A., Cooper, J. J., & Novick, A. M. (2025) · Biological Psychiatry · doi:10.1016/j.biopsych.2025.05.004
Behavioral Changes in Crayfish after Daily Exposure to Blue LED Light.
Syed, Y. A., Gurbakhshash, S., Joanne, E. P.-C., Saima, K., Rachel, C., & Mark, E. J. W. (2025) · Journal of Neuroscience and Behavioral Health · doi:10.5897/jnbh2024.0168
Mihelčič, M., & Šinkovec, A. (2026) · Nordic Pulp & Paper Research Journal · doi:10.1515/npprj-2026-0025
Inabu, Y., Takakura, Y., Shinohara, Y., SUNADOME, M., Watanabe, R., Kushibiki, S., & Sugino, T. (2026) · Animal Science Journal · doi:10.1111/asj.70245
- Authors
- Holzman, D. C.
- Affiliations
- David C. Holzman writes on science, medicine, energy, economics, and cars from Lexington and Wellfleet, Massachu-setts. His work has appeared in Smithsonian, The Atlantic Monthly, and the Journal of the National Cancer Institute
- Corresponding author
- Holzman, David C.
- Venue
- Environmental Health Perspectives
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-01-01
- Volume
- 118
- Issue
- 1
- Pages
- A22-A27
- ISSN
- 0091-6765 (ISSN-L)
- 1552-9924
- PMC
- PMC2831986
- OpenAlex
- W2062047857
- Cited by
- 102
- References
- 0
- Citations by year
- 2026: 3 · 2025: 7 · 2024: 3 · 2023: 7 · 2022: 5 · 2021: 7 · 2020: 10 · 2019: 7 · 2018: 17 · 2017: 10 · 2016: 9 · 2015: 5 · 2014: 3 · 2013: 4 · 2012: 2
- Type
- other
- Language
- en
- Open access
- gold
- doi.org
- Licence
- public-domain
- creativecommons.org/licenses/by/4.0/ (vor, 2919 d)
- Locations
- Environmental Health Perspectives (publishedVersion, public-domain)
- PubMed Central (publishedVersion, public-domain)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
- Health Sciences › Medicine › Ophthalmology › Ocular and Laser Science Research
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Light effects on plants
- Keywords
- blue light, health effects, light spectrum, circadian rhythm, blue light exposure
- MeSH terms
- Animals, Circadian Rhythm, Color, Environmental Health, Humans, Light, Phototherapy, Photoreceptor Cells, Vertebrate
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