You know this but smartphones emit blue light that lets us read whatever is on the screen even in sunny weather.
This light does not turn off as per the daily hours and is emitted all the time from phones, laptops, TVs and more. The light that imitates the sun brightness, makes your brain confused to think is daytime even at night. This stops the brain from falling asleep and releasing melatonin hormone for sleep. So experts advise you to turn off all gadgets 2 hours prior sleep.
Melatonin is released by this tiny organ in the brain – pineal gland a few hours before sleep. Why this blue light keeps us awake led to the photoreceptor Melanopsin. We have been familiar with many cones and rodes for the vision and Melanopsin was just discovered recently in the retina ganglion cells that are blue light sensitive! Ever since, studies claimed that average person that uses mobiles before bed has troubles sleeping.
The blue light impact is worse for teenagers who are more under risk than adults. The circadian rhythm shifts in adolescence and makes teenagers be restless more. Video games or TV shows before bed are enough to postpone sleep for a few hours.
Blue light Is not the only problem
Dr. Martin Blank, Physiology and Cellular Biophysics Department joined experts worldwide who made appeal to the United Nations about the dangers of EM devices like WiFi and mobiles.
There are many dangers from these devices and mostly they link to cancer. The kids’ brains get more radiation by 4 times even compared to adults and kids hold gadgets all the time.
The love for screens is problem by itself. In China this screen addiction is a clinical issue and many rehab centers exist for this for young people addicted to screens. There is still no 100% proven results for these rehabs but they show the dark picture of reality.
What to do
First, limit the screen use before bed, turn off the screens before sleep. Try reading instead!
Also download the app f.lux that adjusts the color of the screens as to the daily time, warm during night, bright during the day and reducing the blue light. Many similar apps exist for phones not just big screens of PCs. Here at CE we all use such apps and have seen better results regarding sleep.
Visit this page for more studies into screen staring and sleep, as well as all the science facts behind f.lux too.
Whether or not you worry for the sleep, you will benefit for sure from pausing these dangerous screen habits.