Blue Lights disrupt sleep

01 Mar 2019

Association have been found with bedtime watching T.V, using mobile and laptop which have blue lights with decreased sleep and diabetes. Normal cricardian rythm produces melatonin at night but blue light decreases it as well as leptin known for satiety ( fullness) resulting in lack of sleep and polyphagia. Chemical endocrine disrupters such as pesticides are known but now research is going on nonchemical endocrine disrupters. Blue lights as low as 5 lux can cause significant damage and Mobiles emit more than 40 lux from a feet. They also predispose to cancer. Blue light preventing spectacles 2 hours before bedtime and avoiding using these devices 1 hour before sleep can bring easy sleep. Keeping room dark and deep colour curtains also leads to easier sleep onset.

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