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What causes the winter blues?
Posted
October 21, 2014
Views
234
Likes
4
Comments
1
Engagement
2.14%
October 21, 2014
234
4
1
2.14%
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0:35Now PlayingA new study explores the cause of seasonal affective disorder (SAD). People with SAD process significantly less serotonin in winter than summer. Gayle King reports.
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