The dark side of blue light

We need new initiatives to reduce light pollution in our homes if we want to minimize the adverse effects that sleep deprivation can have on our health.


tower bridge of london
Photo by Nicole Rathmayr on

For many of us living in trendy metropolitan cities across the world we have
become blinded to the sheer amount of concentrated artificial light not only on
our streets but also in our homes.

Reliance on artificial light has increased as manufacturers produce ever more
convenient light-emitting products deemed by society as ‘essential must haves’.
Furthermore, the time we spend being exposed to artificial light has
exponentially increased, with many families glued to their TVs and their latest
smart phone.

Very few of us understand the negative health effects on our sleep and overall
health that result from exposure to artificial light. Poor sleep can lead to some
serious medical conditions such as obesity, cardiovascular disease, and diabetes,
leading to a shortened life expectancy.

Fluorescent and LED lights most commonly found in our homes cause a two-fold
problem by emitting blue light radiation and artificial light.

The main issue with blue light is that it reduces our melatonin production.
Melatonin is a hormone produced by the pineal gland in the brain and helps us
fall asleep. It is this very hormone that interacts with our sleep wakening cycle
known as the circadian rhythm. Research indicates that blue light over all other
types of light suppresses melatonin production the most.

Stay tunes for more information on how to reduce blue light in your home!

Published by Dr Chris George

NHS doctor working in General Practice.

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