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Blue Light Exposure Can Impact Sleep, Skin, and Eyes — Here's How to Shield Against It

Learn why blue light can have negative, and sometimes positive, impacts on our health, and what to do to combat it.

ByJoshua Rapp Learn
(Image Credit: Standret/Shutterstock) Standret/Shutterstock

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In today’s ever more connected world, it’s fair to say that some of us receive nearly as much screen time as we do actual sunlight — if not more, depending on your job and the time of year.

A growing body of research shows that the blue light that these screens emit might have effects on human health, whether it’s our vision, skin, or our sleep.

“Blue light has an effect on skin health and even the retina in the eyes,” says Kseniya Kobets, an assistant professor of medicine at Albert Einstein College of Medicine and the director of cosmetic dermatology at Montefiore Einstein Advanced Care.

Blue light sits in the light spectrum between ultraviolet, high-energy light, and other types of visible light that aren’t blue light and emit lower energy such as green, orange, and red light. About one third of all visible light falls into the blue light ...

  • Joshua Rapp Learn

    Joshua Rapp Learn is an award-winning D.C.-based science writer. An expat Albertan, he contributes to a number of science publications like National Geographic, The New York Times, The Guardian, New Scientist, Hakai, and others.

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