Preventive effect of morning light exposure on relapse into depressive episode in bipolar disorder

Light therapy has been suggested to have a curative effect on bipolar depression; however, preventive effects of light exposure on depressive episodes remain unclear. This study evaluated whether daytime light exposure in real-life situations was associated with a preventive effect on relapse into depressive episodes in patients with bipolar disorder.This prospective, naturalistic, observational study was conducted in Japan between August 2017...