Light contains a spectrum of colors.
Blue light suppresses melatonin.
Melatonin regulates the body's circadian rhythms.
Having a regular
circadian rhythm allows for proper restfulness and thus promotes overall
health.
Digital electronics' screens typically have LED or Fluorescent
light which use back-lighting technology. This technology exposes us
to more blue light at times (after sunset) when humans previously did
not receive exposure.
The Harvard Medical school has been researching
the effects of increased screen time (particularly during normal resting
hours) and its impact on human health. The preliminary findings are
showing a connection to many of the health issues (cancer, diabetes, obesity, heart disease, and depression) that have been plaguing developed nations in the last few decades.
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