You can not know this, but the smart phone emits bright blue light that lets you read what which it is on the screen, even during the brightest spots of the time. But light does not turn off or adjust according to the time of day; it is emitted continuously, not only for our smartphones, but for our laptops, televisions and other devices as well. The problem is that this light, which mimics the sunshine, confuses your brain into thinking it is during the day, even during the dark of night. This in turn the brain stops release of melatonin, the hormone that induces sleep, and prevents you from sleep. For this reason, experts recommend to disable all displays at least two hours before bedtime.
Melatonin is released by a small organ in the brain called the pineal gland of a couple of hours before bedtime. The science of why blue light emitted by mobile devices keeps people awake led to discovery of a photoreceptor called Melanopsin. Although we have long been familiar with the various rods and cones that build our vision, Melanopsin was recently discovered in the retinal ganglion cell, which are sensitive to blue light. Since then, experimental research has found that the average person using mobile devices before bedtime may have difficulty falling and / or staying asleep.
The impact of blue light is even more important for teenagers, who are more vulnerable to the effects of light than adults. This is because the natural circadian rhythm changes during adolescence, making teens feel more awake late into the night. Launch of a video game or television before bedtime could be enough to push away the drowsiness of one or two hours, so early morning particularly difficult.
Light Blue is not the only concern
Dr. Martin Blank Department of Physiology and Cellular Biophysics at the University of Colombia has joined a group of scientists around the world who are making an international call to the United Nations regarding the dangers associated with various electromagnetic emitting devices such as cell phones and Wi-Fi.
There are several concerns with these devices, including its relationship with cancer. More worrying is the fact that a child’s brain absorbs up to four times more radiation than an adult’s, and children today are growing up with these devices in hand. You can read more details about this here .
Our love for our screens is itself a problem. In China, the screen addiction is actually considered a clinical disorder, and as a result of a number of rehabilitation centers have been established where young addicts screens are completely isolated from all media. Although not yet established the success of these treatment centers, their need paints a dark picture of the technological age in which we live.
What you can do
The first thing you can do is limit your screen time before bed, turning all the screens of at least two hours before planning to sleep. This is the perfect time to catch up on your reading.
can also download an application called F.lux, which adjusts the color of the computer screen to the time of day – hot at night and brighter during the day – and cut the blue light emitted . There are similar applications for mobile as well. All of us here in the EC use these applications and have really noticed an improvement in sleep quality.
here is a page of your site that provides greater research into what stares screens can make your sleep as well as the science behind the F.lux application.
Whether you are concerned about your dream, you can benefit from a break every day of our screens of smart phones and others.