December 23, 2014

E-Readers Foil Good Night’s Sleep

Light-emitting electronic devices keep readers awake longer than old-fashioned print

Use of a light-emitting electronic book (LE-eBook) in the hours before bedtime can adversely impact overall health, alertness and the circadian clock, which synchronizes the daily rhythm of sleep to external environmental time cues, according to Harvard Medical School researchers at Brigham and Women’s Hospital.