Does a Study Change What We Know About Blue Light?

STORY AT-A-GLANCE

  • Evidence from a small study found that blue light helped mice sleep better — but before we change the way we think about blue light’s effect on humans, studies need to be done on humans, at least one researcher says
  • Blue light is linked to many well-documented health risks, including sleep problems
  • The use of blue light-emitting smartphones, computers, tablets and e-readers before bedtime is linked to sleep disturbances
  • Whether future research shows blue light disturbs sleep or not, it’s best to avoid it and let your natural circadian rhythm work 

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