Devices and the production of melatonin (DW#703)
How exactly does our cell phone interfere with sleep?
In many ways, it turns out. Let’s explore the major ones:
The blue light from technology such as phones, computer screen and televisions suppresses the production of melatonin.
Melatonin is the hormone that controls our sleep/waking cycle or circadian rhythm. In other words, melatonin signals the brain that it is time to sleep.
When our eyes absorb the bright blue light from the devices around us, the release of melatonin is delayed, making it more difficult for people to fall asleep. Reduced melatonin also makes it harder for us to stay asleep. The exposure to light basically wires our brains, increasing alertness rather than relaxation.
It is well documented in research studies that the bright light from phones, tablets and computers blocks the production and release of Melatonin after about 90 minutes of technology use in the evening.
What may be even more alarming is the finding that after five nights of exposure to bright lights from mobile devices, the natural body clock can be delayed that same 1.5 hours.
In other words, regular use of devices before bedtime impacts us more than simply losing a night or two of sleep. It can actually alter our sleep cycles.
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