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1. www.health.harvard.edu › staying-healthy › blueBlue light has a dark side - Harvard Health

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   Jul 24, 2024 · Blue light has a dark side. July 24, 2024. What is blue light? The effect blue light has on your sleep and more. Although it is environmentally friendly, blue light can affect your sleep and potentially cause disease. Until the advent of artificial lighting, the sun was the major source of lighting, and people spent their evenings in (relative ...

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2. www.healthline.com › health › what-is-blue-lightWhat’s Blue Light, and How Does It Affect Our Eyes?

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   Apr 24, 2023 · Blue light has very short, high energy waves. In fact, they’re only slightly longer and less powerful than UV waves, which are too short for people to see with the naked eye. Health experts have ...

3. Videos

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     How Can Blue Light Affect Your Health?

     Jul 1, 2022

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     Here's What Blue Light Actually Does To Your Body

     Sep 13, 2020

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     BLUE LIGHT — What Is Blue Light & How Does It Affect Your Health? | Doctor ER

     Apr 28, 2021

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4. www.aao.org › eye-health › tips-preventionShould You Be Worried About Blue Light? - American Academy of ...

   www.aao.org › eye-health › tips-prevention

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   Mar 10, 2021 · It's also no more damaging than blue light from the sun, Dr. Khurana says. Too much exposure to ultraviolet light from the sun increases the risks of eye diseases, including cataracts, growths on the eye and cancer. We know less about blue light. Its effects are still being researched. Some studies suggest that not enough exposure to sunlight ...

5. health.ucdavis.edu › blog › cultivating-healthHow blue light affects your eyes, sleep, and health

   health.ucdavis.edu › blog › cultivating-health

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   Aug 3, 2022 · Blue light boosts alertness, helps memory and brain function, and elevates mood. It regulates your body's natural wake and sleep cycle (circadian rhythm). Sunlight is also important for the growth and development of eyes and vision in children. Learn about conditions related to vision and eye health.

6. www.webmd.com › eye-health › blue-light-healthHow Does Blue Light Affect You? - WebMD

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   Sep 16, 2022 · Symptoms include dry, irritated eyes and blurred vision. Blue light may also damage your retinas. That’s called phototoxicity. The amount of damage depends on wavelength and exposure time ...

7. www.allaboutvision.com › blue-lightBlue light: It's both bad and good for you - All About Vision

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   Jan 3, 2020 · The higher degree of scattering of these rays is what makes a cloudless sky look blue. 3. The eye is not very good at blocking blue light. Anterior structures of the adult human eye (the cornea and lens) are very effective at blocking UV rays from reaching the light-sensitive retina at the back of the eyeball.

8. People also ask

   Is blue light bad for your health?

   • If blue light does have adverse health effects, then environmental concerns, and the quest for energy-efficient lighting, could be at odds with personal health. Those curlicue compact fluorescent lightbulbs and LED lights are much more energy-efficient than the old-fashioned incandescent lightbulbs we grew up with.

   Blue light has a dark side - Harvard Health

   www.health.harvard.edu/staying-healthy/blue-light-has-a-dark-side

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   Is blue light good for health?

   • It's well documented that some blue light exposure is essential for good health. Research has shown that high-energy visible light boosts alertness, helps memory and cognitive function and elevates mood.

   Blue light: It's both bad and good for you - All About Vision

   www.allaboutvision.com/en-ca/digital-eye-strain/blue-light/

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   Is blue light bad for Your Eyes?

   • Blue light has very short, high energy waves. In fact, they’re only slightly longer and less powerful than UV waves, which are too short for people to see with the naked eye. Health experts have warned against the harmful effects of UV rays, which can damage your skin and your eyes. High energy blue light waves are nearly as powerful.

   What’s Blue Light, and How Does It Affect Our Eyes? - Healthline

   www.healthline.com/health/what-is-blue-light

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   Does blue light cause cancer?

   • Blue light exposure might raise your risk for certain cancers. One study found that people who work the night shift are at greater risk for breast, prostate, and colorectal cancers. Your child’s eyes don’t filter blue light as well as yours do.

   How Does Blue Light Affect You? - WebMD

   www.webmd.com/eye-health/blue-light-health

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   Is blue light exposure from screens harmful?

   • Blue light exposure from screens is small compared to the amount of exposure from the sun. However, there is concern about long-term effects of screen exposure from digital devices. This is especially true when it comes to too much screen time and screens too close to the eyes.

   How blue light affects your eyes, sleep, and health - UC Davis Health

   health.ucdavis.edu/blog/cultivating-health/blue-light-effects-on-your-eyes-sleep-and-health/2022/08

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9. www.webmd.com › eye-health › what-is-blue-lightThe Science Behind Blue Light and Its Effects on Your Eyes

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   Feb 12, 2024 · Blue light is located in a narrow band near an outer edge of the visible spectrum, with wavelengths close to those of ultraviolet light. Blue light triggers your eyes to react, especially the lens ...