Alongside this, exposure to blue light has been attached to an inability to sleep. It is for this reason that many recommend not looking at ones’ phone for too long before sleep. The theory is that the blue light damages the body’s biological timer, also known as its circadian clock.
What is blue light?
Blue light, also known as high-energy visible, is a type of light visible on the light spectrum by the human eye; it is also the reason why, to our eyes, the sky looks blue due to the blue light waves scattering particles in the atmosphere.
As a result, most of the public’s exposure to blue light is not from their smartphones, but from the sun in question.
Is blue light harmful in the long term?
This is something scientists and researchers are still beginning to understand, and the study into the impact of blue light on ageing is one of those steps.