Tablet Light May Affect Sleep
Dec-25-2014

Your new tablet may be convenient for reading on the go, but it may not be so good for your sleep.

Two hours of exposure to devices that have luminous back-lit displays -- like tablets -- suppresses melatonin, which could then affect sleep by disturbing the body's natural circadian rhythm, a small new study in the journal Applied Ergonomics suggests.

Researchers from the Lighting Research Center at Rensselaer Polytechnic Institute examined these devices' effects on melatonin in 13 people. They had all the study participants play and watch movies on a tablet; some of them wore special goggles that affected the body's melatonin production based on the light from the screens.

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