This Is What Smartphone Light Does To Your Brain And Body

May 24, 2016

All smartphones emit a bright blue light which allows you to read what's on the screen even during the brightest points of the day. But the light doesn't turn off or adjust according to the hour of the day.

blue light bad for sleep
Getty Images

The problem is that this light, which mimics the brightness of the sun, confuses your brain into thinking it's daytime. This causes the brain to stop producing melatonin, a hormone that gives your body the "time to sleep" cues. Because of this, smartphone light can disrupt your sleep cycle, making it harder to fall and stay asleep — and potentially causing serious health problems along the way.

Here's how it works:

how exposure to blue light affects your brain and body
Tech Insider

What Can You Do?

Limit your screen time before bed, turning all screens off (phones, televisions, laptops) at least two hours before you plan to fall asleep. This should be sufficient time for your brain to understand it's night time and you're ready for a good night's sleep.

(h/t) Tech Insider

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