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Sleep Health: Circadian Alignment, Daylight, Light-at-Night (LAN), and Public Health

Special Issue Editor

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Guest Editor
Light and Health Research Center, Department of Population Health, Science and Policy, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
Interests: light and health; circadian rhythms; sleep; light therapy; circadian entrainment; light at night; light for alertness; daylight and health

Special Issue Information

Dear Colleagues,

A misalignment between our body's circadian clock and local solar cycle, as might occur due to specific sleep or work schedules (e.g., shift workers or frequent travelers), can lead to social, behavioral, and metabolic health problems. Daily robust patterns of light and dark serve as the primary environmental cue for the sleep-regulating master biological clock. However, the true potential of light as a non-pharmacological tool to promote circadian alignment remains uncertain due to three major shortcomings in the literature: (1) a lack of accurate and complete characterization of photic stimulus as perceived by the human circadian system; (2) a lack of use of personalized calibrated light-measurement devices in light and health field studies; (3) the implementation and testing of photic interventions at group level without characterizing high differential sensitivities across individuals. Papers addressing these shortcomings in pursuit of sleep-promoting circadian lighting solutions are invited to submit their manuscripts to this Special Issue. Furthermore, the COVID-19 pandemic has forced people across the world to spend a lot of the daytime within their homes, leading to a substantial increase in the use of self-luminous devices. Lighting for most indoor spaces has been manufactured, designed, and specified to meet visual requirements and to address energy concerns. We would also like to invite manuscripts that can shed light on how altered modern-day light exposures can affect sleep and well-being, especially among vulnerable populations such as adolescents and young adults.

Dr. Rohan Nagare
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. International Journal of Environmental Research and Public Health is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2500 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.


  • non-image-forming effects of light
  • light-at-night (LAN) and sleep
  • circadian light
  • daylighting
  • ipRGCs
  • COVID-19 and sleep health
  • circadian phototransduction
  • suprachiasmatic nuclei
  • self-luminous devices

Published Papers

This special issue is now open for submission.
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