Is exposure to blue light affecting your sleep?

All humans have a natural sleeping cycle which is known as the circadian rhythm. Light is the primary cue that our bodies use to regulate the circadian rhythm. Blue light tends to suppress the body's production of melatonin, a hormone that has  long been associated with control of the sleep–wake cycle. This means that excessive exposure to blue light after the sun has set can throw your body off and delay your circadian rhythm. 

Since all portable devices shine straight into our eyes and we tend to hold them close to our face, they are much more likely to cause a disrupted body clock. Our body clock is so sensitive that blue light has been noticed to impact the circadian rhythm of individuals who are otherwise entirely blind. 

How does blue light affect us in other ways?

Even though our circadian rhythm is mainly associated with sleep, a recent study shows that it also plays a role in various other regulatory functions in our body. Changing circadian rhythm can end up influencing organ functions and impair thinking. It mostly makes it difficult for you to fall asleep. Some experts have linked circadian disruptions to obesity, depression, diabetes, and even cancer.

Since blue light tends to flicker much more than any other color due to its high energy wavelength, it can cause fatigue and headache amongst people. Blue light blockers for sleep can be the solution.

How do blue light blocking lenses work? 

Blue light blockers for sleep, as the name suggests, help you filter out all the blue light that disrupts your body clock. It is best if you wear these glasses in the evening or at night. You can use these glasses to work late at the office or are just at home watching Netflix. Even though they are non-prescription, you can still get them in a prescription version if you already wear glasses.