Read From A Book Before Bed, Not an E-Reader

December 23, 2014 8:17 AM

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Many people like to read at bedtime. It is a good way to calm down the brain—and the heartrate—and relax effectively. But a new study says that you should make sure to read from a book and not an e-reader.

Lead study researcher Anne-Marie Chang says, “Electronic devices emit light that is short wavelength-enriched light, which has a higher concentration of blue light—with a peak around 450 nm—than natural light. This is different from natural light in composition, having a greater impact on sleep and ...

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