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Do smart phones affect sleep?

How light from gadgets' screens affects our sleep-wake cycles.

Do smart phones affect sleep?

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References
  1. Holzman, D.C. (2010). What's in a Color? The Unique Human Health Effects of Blue Light. Environmental Health Perspectives. 118(1). A 23-27.
  2. Harvard Medical School (September 2nd, 2015). Blue light has a dark side. Harvard Health Letter. Retrieved from http://www.health.harvard.edu/staying-healthy/blue-light-has-a-dark-side.
  3. Lely, S., Frey, S., Garbazza, C., Wirz-Justice, A. Jenni, O.G., Steiner, R., Wolf, S., Cabochon, C., Bromundt, V. and Schmidt, C. (2014). Blue Blocker Glasses as a Countermeasure for Alerting Effects of Evening Light-Emitting Diode Screen Exposure in Male Teenagers. Journal of Adolescent Health. 56(2015). 113-119.
  4. Viola, A.U., James, L.M., Schlangen, L.J.M. and Dijk, D.J. (2007). Blue-enriched white light in the workplace improves self-reported alertness, performance and sleep quality. Scandinavian Journal of Work, Environment and Health. 34(4). 294-306.
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