Studies have shown that the blue light from screens cause many health problems. At night, light blue throws the body's biological clock—the circadian rhythm—out of whack. Sleep suffers. Worse, research shows that it may contribute to the causation of cancer, diabetes, heart disease, and obesity. While light of any kind can suppress the secretion of melatonin, A Harvard study confirms that blue light at night does so more powerfully.
Blue light waves are the among the shortest, highest energy wavelengths in the visible light spectrum. Because they are shorter, these "Blue" or High Energy Visible (HEV) wavelengths flicker more easily than longer, weaker wavelengths. This kind of flickering creates a glare that can reduce visual contrast and affect sharpness and clarity.
This flickering and glaring may be one of the reasons for eyestrain, headaches, physical and mental fatigue caused by many hours sitting in front of a computer screen or other electronic device.
Our eyes' natural filters do not provide sufficient protection against blue light rays from the sun, let alone the blue light emanating from these devices or from blue light emitted from fluorescent-light tubes. Prolonged exposure to blue light may cause retinal damage and contribute to age-related macular degeneration, which can lead to loss of vision.
Dr. Nicholas Kardaras, researched clinical and neurological impacts the "Glow Face" has on images of the brain. His researched shows that stimulating glowing screens are as dopaminergic – dopamine-activating – to the brain’s pleasure center as sex. Dr. Peter Whybrow, Director of Neuroscience at UCLA, calls computers “Electronic Cocaine” for the brain. Other clinical research is pointing towards video games contributing to psychiatric disorders such as schizophrenia and psychosis.
GLOW KIDS -By Dr. Nicholas Kardaras -We’ve all seen them: kids hypnotically staring at glowing screens in restaurants, in playgrounds and in friends' houses―and the numbers are growing. Like a virtual scourge, the illuminated glowing faces―the Glow Kids―are multiplying. But at what cost? Is this just a harmless indulgence or fad like some sort of digital hula-hoop? Some say that glowing screens might even be good for kids―a form of interactive educational tool.