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melatonin
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Introduction & Top Questions References & Edit History Related Topics
Videos
Why smartphones can disrupt sleep
Understanding seasonal affective disorder
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Videos

Why smartphones can disrupt sleep
Learn why smartphones keep people awake.
Video: © American Chemical Society (A Britannica Publishing Partner)
Understanding seasonal affective disorder
Explore the chemistry of seasonal affective disorder.
Video: © American Chemical Society (A Britannica Publishing Partner)
VIEW MORE in these related Britannica articles: