Study Links Exposure to Light at Night to Depression

Researchers at the Nara Medical University School of Medicine in Nara, Japan, performed a two year study on 863 subjects. The study found that the link between light exposure and depression occurred even when the light did not cause people to awaken or experience other sleep disturbances during the night.

The cause of the link is unproven, however it is believed to be linked to circadian rhythm disruption.

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