Skip to content

How Blue Light Affects Your Sleep And What You Can Do

 By Maureen Salamon from WebMd.Com 2020

Have you ever woken up to bright morning skies feeling energized? A big reason for your mood is the high-intensity blue light coming from the sun. Among the visible light spectrum, blue wavelengths have the most powerful effect on your sleep-wake internal body clock.

Both natural and artificial blue light can boost your alertness and mental sharpness. But too much of it may keep you awake when your body needs to wind down.


Need help waking up in the morning? Open the blind or get outside to feel more alert.

Light From Screens

Their “blue” light has a powerful effect on your brain. Turn them out about 2hrs before bed.

Artificial Light

Bright lights after dark signal our brain to wake up. In the evening. In the evening. Use dim light, and block outside light.

Block Out Light To Get Good Sleep

How Blue Light At Night Hurts Sleep

Your eyes aren’t good at blocking blue light. So almost all of it passes straight through to the back of your retina, which helps your brain translate light into images.

Exposure to all colors of light helps control your natural sleep-and-wake cycle, or circadian rhythm. More so than any other color, blue light messes with your body’s ability to prepare for sleep because it blocks a hormone called Melatonin that makes you sleepy.

Bottom line: You’re less drowsy than usual at night, and it takes you longer to fall asleep.

Blue Light Sources

Americans spend an average of 7 hours a day on electronic devices. That’s a lot of time staring at blue light. Worse yet, nine out of 10 Americans admit to reaching for an electronic device at least several nights each week shortly before bedtime. That could be an invitation for insomnia.

The light from your devices often appears white. But they can give off wavelengths in the range of 400 to 490 nanometers, which is blue light.

Indoor sources of blue light include:

  • Televisions
  • Smartphones
  • Tablets
  • Gaming systems
  • Fluorescent light bulbs
  • LED (light-emitting diode) bulbs
  • Computer monitors (and Laptops)

Ways to Manage Blue Light

The simplest way to lower your exposure to artificial blue light is to turn off your smartphone, TV, and other gadgets well before bedtime. Other ways include:

Blue light-blocking glasses. They’re widely sold online. Amber or brown-tinted lenses may help best.

Cut back on screen time starting 2-3 hours before bed.

Dim the brightness on your devices. This is often called night mode or dark mode. It changes the background from white to black.

Install blue light-filtering apps on smartphone, tablet, and computer screens. They filter a lot of blue light from reaching your eyes without making it harder to see the display.

Swap light bulbs. LEDs give off more blue light than fluorescent bulbs. And both emit more blue light than energy-hungry incandescent bulbs, which are being phased out.

Use a dim red lightbulb as a nightlight. Red is the color that least affects your circadian rhythm.

Set an alarm for 1 hour before bed to remind yourself to quit using devices.

WebMD Medical Reference

Source HERE

Sleeping Early And Its Incredible Health Benefits!

At what time do you go to bed? Okay, wait, at what time do you actually sleep? Because earlier, your bedtime was your sleep time, but these days your Smartphone and TV Remotes or Laptops occupy more of your time and postpone your sleeping hours. Most of us do not really fall asleep early these days and the reasons are many!

Afford Yourself More Early Nights - The Benefits Are Worth It

Well, knowing the real health benefits of falling asleep early may change your routine.

First of all, when you sleep early, you will feel better and fresh when you wake up the next day morning. It gives a whole lot of positive energy that lets you stay positive and think positive too.

You can get enough time to work out with the fullest of your energy.

When you sleep late, the quality of sleep will be poor.

When you sleep early, your skin will enjoy good health the next day/morning.

Fresh mind, body, and refreshing morning will be the ultimate gift you can give to yourself just by sleeping early.

You will have better cognitive skills by sleeping early and this is proven by researchers too.

You will also be less prone to heart attacks and cancer by practicing the habit of sleeping early.

Source HERE

Leave a Reply

Your email address will not be published. Required fields are marked *