Yahoo Canada Web Search

Search results

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

   www.health.harvard.edu › staying-healthy › blue

   • Cached

   Jul 24, 2024 · 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) darkness.

   • Location: 4 Blackfan Circle, 4th Floor, Boston, 02115, MA
   • Email: hhp_info@health.harvard.edu

   • Phone: (877) 649-9457

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

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

   • Cached

   Apr 24, 2023 · Most exposure to blue light is from the sun, but some health experts have raised questions about whether artificial blue light could be damaging your eyes.

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

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

   • Cached

   Sep 16, 2022 · Blue light from electronics is linked to problems like blurry vision, eyestrain, dry eye, macular degeneration, and cataracts. Some people have sleep issues. Here’s what you...

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

   health.ucdavis.edu › blog › cultivating-health

   • Cached

   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.

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

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

   • Cached

   Mar 10, 2021 · Blue light does affect the body’s circadian rhythm, our natural wake and sleep cycle. During the day, blue light wakes us up and stimulates us. But too much blue light exposure late at night from your phone, tablet or computer can make it harder to get to sleep.

6. pmc.ncbi.nlm.nih.gov › articles › PMC9424753The influence of blue light on sleep, performance and ...

   pmc.ncbi.nlm.nih.gov › articles › PMC9424753

   Abstract. Introduction: Blue light from electronic devices has a bad reputation. It has a wavelength which may influence our circadian rhythm and cause bad sleep. But there are other aspects of blue light exposure which are often overlooked, for example, it may influence performance and wellbeing.

7. People also ask

   How does blue light affect health?

   • Increased wellbeing might reduce stress and therefore lessen the risk of injury. An important negative effect of blue light exposure might be a decrease in sleep quality and sleep duration, because it might negatively influence performance and recovery.

   The influence of blue light on sleep, performance and wellbeing in

   pmc.ncbi.nlm.nih.gov/articles/PMC9424753/

   See all results for this question

   What is blue light & how does it affect your eyes?

   • 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, retina, and cornea. Some research shows a link between eye damage and short-wave blue light with wavelengths between 415 and 455 nanometers.

   The Science Behind Blue Light and Its Effects on Your Eyes - WebMD

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

   See all results for this question

   Why do we get blue light?

   • And the proliferation of electronics with screens, as well as energy-efficient lighting, is increasing our exposure to blue wavelengths, especially after sundown. Everyone has slightly different circadian rhythms, but the average length is 24 and one-quarter hours.

   Blue light has a dark side - Harvard Health

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

   See all results for this question

   Does blue light affect heart rate?

   • One study found that heart rate was increased when exposed to the blue light condition, but also the red light condition compared to the dark condition (Figueiro et al., 2009). Another study found no significant effect on heart rate the next morning after evening exposure to the blue light (Driller and Uiga, 2019).

   The influence of blue light on sleep, performance and wellbeing in

   pmc.ncbi.nlm.nih.gov/articles/PMC9424753/

   See all results for this question

   Does blue light affect mood?

   • Two studies found an increase in positive mood when exposed to blue light (Viola et al., 2008; Ekström and Beaven, 2014). One study showed higher results for mood in the non-blue light condition, adding to the evidence that blue light can decrease mood (Burkhart and Phelps, 2009).

   The influence of blue light on sleep, performance and wellbeing in

   pmc.ncbi.nlm.nih.gov/articles/PMC9424753/

   See all results for this question

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

   www.webmd.com › eye-health › what-is-blue-light

   • Cached

   Feb 12, 2024 · Blue light triggers your eyes to react, especially the lens, retina, and cornea. Some research shows a link between eye damage and short-wave blue light with wavelengths between 415 and...