Blue light

Blue light emitted from devices has proven to be bad for our health time and time again. Blue light has a short wavelength and much energy, so it is more stimulating for our brains. Our brain confuses this with daylight, making it difficult to sleep. IpRG cells in our eyes are sensitive to this light. These cells send signals to the suprachiasmatic nucleus (SCN) in our brain. They regulate our circadian rhythm. The circadian rhythm regulates the sleep cycle and influences various functions like hormone production, metabolism, etc. ___________________________________________________________________________________________________ ______________________________________________________________________________________________________________________________________ Essentially, the SCN receives signals from ipRG cells and misinterprets them as daylight. To put it simply, it tells our body when to feel awake vs. sleepy. This can interfere with the production of melatonin, a hormone that ...