Think blue light is hurting your sleep cycle? A new study suggests it can actually improve the overall sleep quality of older adults — but only if they time it right.

Scrolling through your phone before bedtime negatively affects your heart's health by lowering heart rate variability (HRV), ...

While the study found blue light could stress the retina and affect sleep, it also found that blue light glasses may not be the solution: The meta-analysis concluded that none of the 17 studies ...

Small studies have linked blue light to hyperpigmentation, explains Heather Woolery-Lloyd, M.D., a board-certified dermatologist in Miami, but no one light color has been singled out as worst ...