1.What blue light does to your body
Blue light glasses signal to your body that is it daytime. Blue light can be good for your body during the day. It boosts attention, reaction times and mood. Blue light naturally occurs in nature during the day. Our bodies recognize blue light and our brain signals the body to stay awake.
2.Negative Side effects
Since blue light tells our bodies to stay awake blue light can have a powerful impact on people’s ability to fall asleep. Blue light at night effects the bodies ability to secrete Melatonin and Leptin. Melatonin is the rest and relaxation hormone, it is what makes us feel safe and calm and ready to sleep. Blue light suppresses this hormone and signals the brain that it is day time, so we don’t feel as tired. Sleep professionals recommend putting away blue light emitting devices 2-3 hours before bed to improve restful sleep.
Leptin is the hormone our brain sends out to signal when we are full during a meal. A research study at Harvard found the blue light may be linked to diabetes and obesity due to lack of Melatonin and Leptin secretion. The study found that exposure to light late at night, especially blue light, changed people’s circadian rhythms enough to effect their release of hormones effectively. This hormone imbalance puts the body into a prediabetic state. Essentially, blue light can make you over eat and under sleep.
3.Do Blue Light Glasses work?
Blue light glasses can be useful in protecting your vision from blue light. Not all glasses are as good as others however. Cheaper blue light glasses allow for more blue light to leak through. A study in Houston found that people who wore blue light glasses had 58% higher Melatonin levels than those who did not.
4.How Much Blue Light Does it Take to Hurt My Eyes?
There is no magic number when it comes to blue light exposure and eye health. People who spend more time on devices are more likely to cause damage to their vision. Blue light has been linked to Chronic diseases like Cataracts, Macular Degeneration, and Pterygium.
People who work on computers all day are at risk. Some people recommend moving away from your device and work space for 5-10 minutes every hour to give your eyes a break from your screen.