Screen time, melatonin and sleep

Way back in the past the only form of artificial light came from candles and a fire. We would wake up at sunrise and retire for bed at sunset. That lifestyle was in balance with our hormones. In the absence of light our bodies naturally produced the sleep hormone melatonin which helped us get to sleep easily.

But today everything is different. We live in a world of artificial light and there is so much light at night these days that we are suffering from a term called light pollution. When you add to the mix that we spend far too much time in front of laptop screens, mobile phones and large LED TV screens and often way into the night we may not realise it but we are exposing ourselves to something dangerous that can dramatically effect our health.

Today’s digital devices emit a type of light called blue light. It is a high energy form of light that cannot only damage our eyes when there is too much exposure but it can also mess with our hormones that can result in the onest of disease.

Blue light is a danger and we need to do something to combat its effects.

in the ideal world we would not look at our digital devices after sunset but try telling your teenage daughter to get off her phone in the evenings is an impossible task.

One solution is blue light blocking glasses. They were first developed by NASA to protect the eyes of astronauts but many eyewear manufacturers are using the same technology. They work by blocking out blue light from digital devices while letting in all other light.

One brand called Tazzo claims to have glasses that block out 100% of blue light. Their website is


Published by Nicole Graves