Could Blue Lights Replace a Daily Cup of Coffee?

6 January, 2014 at 11:05 | Posted in Body & Mind, Science | Leave a comment


Scientists claim they could be more effective at keeping you alert than caffeine

By Ellie Zolfagharifard

  • Blue light is harmless to tissue but can trigger biological effects in the body
  • In a study, people exposed to blue light performed better at distraction tests 
  • The same test, proved too much for caffeine users who performed poorly
  • It builds on research that has found blue light can improve cognitive abilities

Blue light has been getting a bad reputation lately for its role in disrupting sleep.Smartphones and other gadgets used before bed can cause restless nights because their light causes melatonin suppression – a chemical which controls the body clock.But there are some positives, according to a recent study, that looks at how blue light can make the brain more alert if it is used at the right time.

Researchers at Mid Sweden University compared the effects of caffeine and blue light on the brain and found them both to have a positive effect.

Read more: Could blue lights replace a daily cup of coffee? Scientists claim they could be more effective at keeping you alert than caffeine | Mail Online.

Link: “A Comparison of Blue Light and Caffeine Effects on Cognitive Function and Alertness in Humans”

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