The Dark Side of Bright LED Lights | by Marko Antuš | Predict | Jul, 2022 – Medium

July 25, 2022 by No Comments

Image by AbigailGina from Pixabay

LED or light-emitting diode is the latest and most energy-efficient source of light to date. LEDs are a great invention. They’re cheap, long-lasting, very bright and extremely effective. Compared to regular incandescent light bulbs, LEDs save at least 75 per cent of energy while lasting up to 25 times longer. A 4W LED bulb is roughly equivalent to a 40W incandescent light bulb. And that’s all great! Until you look at what scientific research has to say about long-term exposure to it.

The problem is that the LEDs are producing high amounts of something called Blue Light. You may worry about what exactly is Blue light.

To put it shortly, the spectrum of visible light consists of several colours. Red, Orange, Yellow, Green, Blue, Indigo, Violet or as some may know it ROY G BIV. Together it makes the light that surrounds us during the day. Blue light sits between green and indigo with a wavelength between 450 and 495 nm (nanometers). It has short but high-energy waves making it very powerful (almost as powerful as UV light, which is considered harmful to your eyes and skin).

What does the blue light do to your body?

During the day it can be pretty helpful. It boosts your attention, raises your mood and helps you sleep better at night. In fact, Scientists recommend exposure to bright light during the day.

Everyone has an internal clock built into their body. This clock makes sure to put you to sleep when the night comes and to wake you up in the morning. It is called a circadian rhythm. The average length of the rhythm is about 24 and one-quarter hours. Exposure to daylight helps to keep a person’s internal clock aligned with the environment.

And here comes the twitch.

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