Bedroom-Invading Smartphones Jumble Body’s Sleep RhythmsSubmitted by emalvini on Tue, 01/07/2014 - 14:25
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.