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 ...

Blue light is a high-energy light that the eyes absorb from computers, smartphones, LED lights, and fluorescent lights. The sun is the biggest source of blue light. On a sunny day, it's 100,000 times ...

You’ve checked your blood reports, and everything seems fine, no iron deficiency, no low Vitamin D, and your thyroid is perfectly normal. You even make sure to hit the bed early enough to clock a ...

You probably do your best to protect your skin from ultraviolet rays by slathering on sunscreen before going outside (and if you haven’t been, now’s a good time to start). But many people aren’t aware ...