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Bedroom-Invading Smartphones Jumble Body’s Sleep Rhythms

Bedroom-Invading Smartphones Jumble Body’s Sleep Rhythms

By Jason Gale Jan 7, 2014 6:00 AM PT

Having trouble sleeping? Check for a glow, inches from the pillow.

Using a smartphone, tablet or laptop at bedtime may be staving off sleep, according to Harvard Medical School scientists, who have found specific wavelengths of light can suppress the slumber-inducing hormone melatonin in the brain.

“We have biologically shifted ourselves so we can’t fall asleep earlier,” said Charles A. Czeisler, a professor of sleep medicine at Harvard Medical School. “The amazing thing is that we are still trying to get up with the chickens.”

The result is less sleep -- and less time for the body to recover. Routinely getting fewer than 8 hours of sleep compromises alertness, reaction time, efficiency, productivity and mood, according to Australia’s Sleep Health Foundation.

Read more: http://www.bloomberg.com/news/2014-01-07/bedroom-invading-sm...

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