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The Effects of Blue Light on Sleep

How does blue light affect sleep?

 

Proper sleep patterns follow circadian rhythms .

This rhythm regulates the body's biological clock, which controls sleep and wakefulness through the secretion of hormones that correspond to day and night.


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What is circadian rhythm?

Circadian rhythm is a 24-hour biological rhythm that regulates hormonal changes that promote wakefulness during the day and sleep at night.

During the day, hormones that help us stay awake, such as cortisol, serotonin, and dopamine, are secreted .
At night, melatonin is secreted to help you sleep deeply and recover .


 

 


The effects of blue light on the brain


Blue light reaches the brain through the eyes and makes us perceive it as daytime.
The brain continues to send signals to stay awake, and arousal hormones like cortisol continue to be secreted.

It suppresses the secretion of melatonin and interferes with deep sleep .

 




The vicious cycle of blue light

Blue light exposure → brain perceives it as daytime → secretes wakefulness hormones → suppresses melatonin → lack of sleep → chronic fatigue and health problems occur




 

The need for blue light blocking


Blocking blue light at night is essential to maintaining melatonin secretion and normalizing circadian rhythms.

Artificial light in modern society disrupts circadian rhythms, reducing the quality of sleep.


Practical tips for blocking blue light

Watching the sunrise every morning helps produce melatonin.
It is recommended to reduce the use of artificial light and electronic devices in the evening.
Before going to bed, you should wear blue light blocking glasses to prevent the harmful effects of blue light.


Luke Eye has developed two premium lenses tailored to different wavelengths of blue light.





Buy Luke Eye Blue Light Blocking Glasses





source:

https://nigms.nih.gov/education/fact-sheets/Pages/circadian-rhythms.aspx#:~:text=Circadian%20rhythms%20are%20physical%2C%20mental,animals%2C%20plants%2C%20and%20microbes.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7065627/#:~:text=Blue%20light%20is%20currently%20considered,with%20severe%20general%20health%20implications.

https://www.webmd.com/sleep-disorders/sleep-blue-light#:~:text=More%20so%20than%20any%20other,you%20longer%20to%20fall%20asleep.






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