Blue light and sleep

Blue light and sleep

It has been known for sometime that blue light emitted from digital devices such as laptops and smartphones is bad for our health but new studies reveal that blue light is also bad for our sleep.

Before artificial light man would wake up at sunrise and go to sleep at sunset. The only form of light other than the sun came from fires and candle light. But we now live in a world where there is light all the time. You just have to look out of the window in the evening in any large city and you will see light everywhere. This light, particularly the Blue Light prevents us from naturally producing the sleep hormone Melatonin.  Melatonin is a hormone made by the pineal gland , a small gland in the brain. Melatonin helps control your sleep and wake cycles. When it is suppressed like when you are exposed to Blue Light the result is poor quality sleep and this can result in a long list of health problems.

Light is an essential controller of melatonin creation from the pineal organ. Right off the bat, it can reset a particular zone of the cerebrum (the suprachiasmatic cores clock) and, thus, the planning of the melatonin generation. Besides, presentation to light amid the body’s natural night decreases melatonin creation and discharge.

A possible solution to preventing the dangers of blue light would be to avoid all digital devices at least 2-3 hours before you sleep but in this day and age we know that is a tall ask. People today are glued to some form of digital device these days and if it is not their smartphone or laptop they are catching up on the latest TV box set on a modern LED TV which emits a great deal of this harmful blue light.

There is a novel solution though. A growing number of people are protecting themselves from blue light in the evenings by wearing glasses with amber lenses that supposedly block out the blue light. These blue light blocking glasses were first developed by NASA but have now become popular. The chances are high that their popularity will increase as people become more informed about the dangers of blue light.


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