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Post date: Dec 23, 2014 8:01:49 PM
Reading on the light-emitting screen suppressed the sleep hormone melatonin, researchers said.
By Carolyn Y. JohnsonGLOBE STAFF DECEMBER 22, 2014
You might want to think twice about curling up with your cellphone, iPad, or laptop at bedtime.
Researchers from Brigham and Women’s Hospital reported Monday that people who read a book on a glowing screen before bedtime took longer to fall asleep and felt less alert the next morning, compared with when they read a printed book.
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