HomeBlogHow Blue Light Affects Our Sleep


Pierre reading iPad blue light in glasses

Ever spend the evening browsing on your phone or binging on Netflix only to stay up all night, tossing and turning? Blue light may be the culprit.


So, "What’s blue light?"
Well, it’s blue… and it’s light.

To be specific, it's part of visible white light. Remember that colorful friend from grade school? Good ol’ Roy G. Biv? If science taught us anything about the awesomeness prisms and rainbows are, we'll remember that white light is actually comprised of a whole range of colors. Now, blue light does the body good. For example, it helps to regulate our circadian rhythm. But like most other things, there are also some downsides.

Getting back to sleep
Remember high school biology?

Although we may not notice it, many digital devices emit an artificial blue light, day and night. That's a lot of blue light. A small portion of blue light, blue-turquoise more specifically, helps regulate our body's natural clock. But what does this mean for our sleep time?

girl looking at computer wearing glasses

Exposure to blue light during the day helps our bodies keep alert and lets them know that it’s time to stay awake. But what about at night?

Heading to bed in ten? Well, that 10 minutes may have just turned into an hour. How? Too much artificial blue light late at night can throw off our planned sleep cycle by up to a full hour. So even if we're in bed, ready to sleep, our brain isn't.

Get back on track
Solution? The most obvious might also be the hardest.

The best course of action is to limit screen time, especially in the evening. But we all know that can be nearly impossible. Thankfully, there are some options.

iphone held in hand

Doctors advise dimming our screens as much as possible, especially while using them in low light settings. For those of us who might have trouble remembering, there's an app for that. Well, apps and programs. Twilight and  f.lux do it automatically adjusting the colors of our screen as the time of day changes.

So the next time you crawl into bed, try to leave your phone on your nightstand and see if that helps.

Want to learn more about blue light? Check out our digital screen protection.

Share at :