Bedroom-Invading Smartphones Jumble Body’s Sleep Rhythms
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 hormonemelatonin 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.
In the U.S. alone, revenue from clinics treating sleep disorders expanded 12 percent annually from 2008 to 2011, reaching $6 billion, according to IBISWorld. Drowsy drivers cause 1,550 fatalities in the U.S. a year, the National Department of Transportation estimates, and insomnia-related accidents in the workplace cost$31.1 billion annually, a study last year found. Insufficient sleep has become so prevalent it is now considered a public health epidemic, according to the U.S. Centers for Disease Control and Prevention.
“Sleep is in a battle for our time with work life, social life and family life,” said David Hillman, a sleep specialist at the Sir Charles Gairdner Hospital in Perth, Western Australia, and the chairman of the Sleep Health Foundation. “For a lot of us, it comes off a poor fourth in that battle.”
Regular sleep disturbances are associated with ailments including obesity, diabetes, heart disease and cancer, according to Hillman.
Modern technology isn’t helping.
The National Sleep Foundation in Arlington, Virginia, commissioned a survey of 1,500 randomly selected adults in the U.S., Canada,Mexico, Germany, U.K. and Japan to understand their bedroom environment and (click)
Categories: Articole de interes general
Fr Daniel,apreciez tema acestui subict despre “somn”. Va rog ffff mult,intrucit poate fi tare benefic si pentru cei care nu stim atita engleza! Multumesc ff mult!