Perspective: Casting light on sleep deficiency

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The use of electric lights at night is disrupting the sleep of more and more people, says Charles Czeisler.

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Correspondence to Charles A. Czeisler.

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Competing interests

The author declares a conflict of interest: Dr Czeisler is the incumbent of a professorship at Harvard University that was endowed by Cephalon, Inc. Dr Czeisler is a consultant and holds equity in Vanda Pharmaceuticals and was formerly a consultant to and a recipient of grant support from Koninklijke Philips Electronics, from which he still receives royalties.

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Czeisler, C. Perspective: Casting light on sleep deficiency. Nature 497, S13 (2013) doi:10.1038/497S13a

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