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Light, Dark, and Bipolar Disorder: Some Practical Guidance

Interventions affecting circadian rhythm can be therapeutic, with some approaches more effective than others.

Chronotherapies, interventions that affect the circadian rhythm, have been studied in both the depressive and the manic stages of bipolar disorder through the years (e.g., NEJM JW Psychiatry Nov 2017  and  Am J Psychiatry  2017; 175:131;  NEJM JW Psychiatry  Nov 2009 and  Biol Psychiatry  2009; 66:298). In this review, the authors have compiled the evidence and recommendations from an International Society of Bipolar Disorders task force. The major treatments include: