Dark Side of Computers, Smart Phones, and Tablets

I use a computer and smart phone for more than 10 hours a day.

So I wasn’t happy to learn that recent scientific studies show the blue light emitted by our computers, tablets and smart phones can cause cancer, ruin your eyes, and cause insomnia.

Device makers use screens that pump out a lot of blue light.  Not for any evil purpose … but just because it’s cheap to make bright LEDs lights which pump out crazy amounts of blue light frequencies (light with a wavelength of between 450 and 495 nanometers).


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A new study by Spanish, British and Canadian scientists published Monday in the journal Environmental Health Perspectives found that blue light is linked to prostate and breast cancer.

The study found that other bright light – such as red or green LEDs – are not linked with cancer.


Numerous studies show that the blue light from our devices can lead to serious eye problems.

For example, blue light is linked with macular degeneration … the main cause of blindness among older Americans.


It’s well-known that exposure to blue light at night can lead to insomnia.

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