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2. Biological effects of high-energy visible light - Wikipedia

   en.wikipedia.org/wiki/Biological_effects_of_high...

   The periodic (daily) exposure to sunlight generally tunes the circadian rhythm to a 24-hour cycle. However, exposure to light sources that excite melanopsin in the retina during nighttime can interfere with the circadian rhythm. Harvard Health Publishing asserts that exposure to blue light at night has a strong negative effect on sleep.

3. Blue light spectrum - Wikipedia

   en.wikipedia.org/wiki/Blue_light_spectrum

   The blue light spectrum is an essential part of the visible spectrum with wavelengths of about 400-480 nm. [1] Blue light is primarily generated by Light-Emitting Diodes (LED) lighting and digital screens, it has now become prevalent in the world around us. [2] LED lighting creates white light by combining blue light with other wavelengths ...

4. Light therapy - Wikipedia

   en.wikipedia.org/wiki/Light_therapy

   Light therapy, also called phototherapy or bright light therapy is the exposure to direct sunlight or artificial light at controlled wavelengths in order to treat a variety of medical disorders, including seasonal affective disorder (SAD), circadian rhythm sleep-wake disorders, cancers, and skin wound infections.

5. Light exposure during the day linked to a 20% lower risk of ...

   www.aol.com/lifestyle/light-exposure-during-day...

   Exposure to light at night, particularly blue light that can be emitted from phones and other screens, can make it harder to get to sleep, Jaime Zuckerman, a clinical psychologist specializing in ...

6. How is blue light impacting our health? Scientists study ...

   www.aol.com/too-much-blue-light-accelerate...

   Excessive blue light can cause accelerated aging in flies because this exposure can cause cellular damage, according to a study released Wednesday.

7. Light effects on circadian rhythm - Wikipedia

   en.wikipedia.org/wiki/Light_effects_on_circadian...

   Brighter light is more effective than dim light. In humans, a lower intensity short wavelength (blue/violet) light appears to be equally effective as a higher intensity of white light. Exposure to monochromatic light at the wavelengths of 460 nm and 550 nm on two control groups yielded results showing decreased sleepiness at 460 nm tested over ...