Prolonged exposure to light late at night causes certain cells in the eye to reset the body's internal clock and upset its rhythms, which can harm health.https://t.co/w2Ec2wN8BA pic.twitter.com/ZJvir84bIe
— Mark S. Frey, DDS (@MarkSFreyDDS) December 9, 2018
from Twitter https://twitter.com/@msfreydds1
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