When you flip a switch or power up your smartphone, the last thing on your mind is whether that light could be messing with ...

Add Yahoo as a preferred source to see more of our stories on Google. Many Americans spend more than seven hours in front of screens daily, which can affect your skin. (Getty Images) (d3sign via Getty ...

Sleep scientists are changing how they think about screen use at night. By Caroline Hopkins Legaspi Experts have long warned about the dangers of blue light before bed. When exposed via smartphones, ...

Your thyroid doesn’t see light, but your brain does. Discover how late-night screen habits confuse your master clock and ...

You bought blue light glasses to save your eyes from screen strain, but somehow they’re making everything worse. Your eyes feel tired, your head hurts, and the world looks like it’s been dunked in ...