Is your phone keeping you awake?

 We’ve heard the reports that using our mobile devices before bedtime is a sure way to disrupt our sleep. Digital devices are emitting greater amounts of blue LED light these days in comparison to other light sources in our house.  Recent studies show that blue light suppresses melatonin (the hormone the brain produces at night to induce sleepiness) more effectively than any other visible wavelength, potentially leaving people more alert when they would otherwise start feeling drowsy.
During the day, a little extra blue light from our computer doesn’t make a difference when we’re already getting so much from the environment. But all that changes at night. How many of us check our email, play a game, or look at Facebook before we turn off the bedside lamp? I know I”m guilty of it almost every night.
So if blue light before bed is bad for us, what are we supposed to do?