Too much or too little sleep linked to doubled depression risk: study

People who sleep fewer than six hours or more than nine hours a day are more than twice as likely to experience depression compared with those who sleep seven to eight hours, a government study showed Tuesday. Research by the Korea Disease Control and Prevention Agency revealed individuals outside the recommended sleep range were 2.1 times more likely to show signs of depression. Among factors examined, including social relationships and health behaviors, sleep duration showed the strongest asso

By The Korea Herald