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E-Readers Foil Good Night’s SleepHarvard Medical School
"Light-emitting electronic devices keep readers awake longer than old-fashioned print."
Q&A: Why Is Blue Light before Bedtime Bad for Sleep? Scientific American
"Two neuroscientists discuss how blue light negatively affects health and sleep patterns"
Blue light has a dark side Harvard Health Letter
"Light at night is bad for your health, and exposure to blue light emitted by electronics and energy-efficient light bulbs may be especially so.
How Your Smartphone Messes With Your Brain-And Your Sleep Scientific American
"Light from those screens triggers a chemical reaction that makes you think it is morning"
Effects of Blue Light on the Sleep Quality of Older Adults Lighting Research Center, Rensselaer
How Your Smartphone Messes with Your Brain—and Your Sleep Scientific American
Blue Light Hazardous to Sleep, but Helpful While Awake Psychology Today