OCT 23, 2017 7:46 AM PDT

Why Blue Light is Bad for Your Health


Almost everywhere you look there are sources of blue light. In cell phones, tablets and computers, blue light is emitted. Blue light is on the higher intensity end of the EM spectrum of light. The white light from the sun is a spectrum of light that blends with blue light included. The problem with cell phones and other devices is that the light they emit has much more highly concentrated blue waves than sunlight. Blue light doesn't get absorbed by the cornea of the eye; it actually passes through to the retina causing cell damage over time. When cell phones or other devices are used late at night, sleep disruption and other health problems can result.

Blue light is how our brains know that it's day or night. When it's night, there is no blue light from the sun, and our bodies produce melatonin which regulates sleep and our circadian rhythm. In addition to possible eye damage, using cell phones and other screen devices at night disrupts the healthy balance of melatonin and interferes with sleep. Sleep deprivation, over an extended period, has been linked to heart disease, diabetes and even some forms of cancer.
About the Author
  • I'm a writer living in the Boston area. My interests include cancer research, cardiology and neuroscience. I want to be part of using the Internet and social media to educate professionals and patients in a collaborative environment.
You May Also Like
APR 14, 2020
Space & Astronomy
APR 14, 2020
Everything You Need to Know About the ESA's Upcoming JUICE Mission
Jupiter is one of the most interesting planets in our solar system, and with that in mind, it may not come off as much o ...
APR 26, 2020
Plants & Animals
APR 26, 2020
These Macaques Slap Their Food Scavenging Competition
One thing that lion-tailed macaques and Malabar giant squirrels have in common is a passionate love for the taste of jac ...
MAY 01, 2020
Chemistry & Physics
MAY 01, 2020
John Conway: the Late Maths Legend and His Game of Life
If maths is the only universal language, then John Horton Conway is among the few who can speak it perfectly. Unfortunat ...
MAY 14, 2020
Chemistry & Physics
MAY 14, 2020
Do Organic Chemists Speak an Alien Language?
Have you ever read a detergent label and got confused? Or had trouble understanding a medication recall? Certain ch ...
MAY 14, 2020
Earth & The Environment
MAY 14, 2020
NASA's ICESat-2 Mission Reports Changes in Arctic Ice Thickness
Arctic sea ice is vital to Earth's climate system, and recent decades have seen troubling declines in sea ice due to ...
MAY 27, 2020
Chemistry & Physics
MAY 27, 2020
Light-Bearing Ether: How a Historical Null Result Revolutionized Modern Physics
Ether (or aether) is a term used in ancient mythology and medieval science to denote the matter that fills in the void o ...
Loading Comments...