Blue light emitting from screen devices harms the human nervous system and physiology, contributing to various health issues.

“we know I guess we're going to get into it but all the ways that blue light can really affect you at your nervous system level your physical health your sleep your mental mental health”

Blue light exposure below 460 nm is generally harmful and potentially damaging to the retina, while light around 480 nm is beneficial for regulating circadian rhythms.

“There's the short wavelength blue light, so below around 460 nm, which is generally considered more bad blue light. It has very little benefit, but it has risk of damage, you know, causing damage to the retina, for example. It's been shown to cause damage to retinal tissue”