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Let's Talk About the Blue Light




What is Blue Light and what it means for your child


Electronic devices have now, more than ever, become a crucial part of most children’s lives. They use screen-based electronics for schoolwork, entertainment, communication and so much more.


Whilst technology offers all of us countless benefits, there is a concern that the ‘blue light’ can affect children’s sleep.


What is Blue Light?

It is the full spectrum of visible light which consists of varied light wavelengths. Violet light has the shortest wavelength, while red light wavelengths are the longest. Blue light, however, is a short wavelength type of light that promotes alertness and performance. It is the blue light that can regulate our sleep-wake cycle.


What are the common sources of Blue Light? Smart phones, televisions, computers, gaming systems and certain e-readers.


The link between Blue Light and Melatonin


Melatonin is a hormone that promotes feelings of sleepiness and the blue light suppresses the production of melatonin. Using devices, particularly during the evening produces artificial blue light and disrupts the natural sleep-wake cycle by tricking the brain into not producing melatonin before bed.


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