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Depression linked to constant light
(HealthScout) UPDATED 2009-10-23
Ohio State University researchers have found that exposure to too much light at night may cause depression. In their study, the scientists found that mice who were exposed to a lighted room 24 hours a day had more symptoms of depression than mice who experienced a normal day-night cycle. Mice who lived in a constantly lit room but who could seek refuge in a dark tube when they wanted also had fewer depression symptoms. The researchers say their finding points to a need to do further research into how artificial light affects humans.
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