Over-exposure to artificial blue light, particularly from sources like smartphones, computer screens and LED lighting, ruins your health. It can lead to the following: -An increase in all types of cancer -Chronic fatigue -Lower testosterone -Harmed decision making (not a joke) -Impaired sleep -Insulin resistance -Reduced ATP production -Harmed eyesight -Skin damage -The loss of dopamine neurons in the brain etc etc Have attached a few images to help you wrap your head around this important area.