Healthy Lifestyles for Bipolar Disorder

The investigators will conduct a randomized controlled trial (RCT) to examine the effects of time-restricted eating as compared to the mediterranean diet. In time-restricted eating (TRE), participants will be asked to limit their food intake to a period of 10 hours per day. In the mediterranean diet, participants will be asked to follow a food plan that emphasizes vegetables, fruit, whole grains, and olive oil as central dietary components. The investigators aim to test both food plans as additions to standard medication approaches in bipolar disorder. Participants who are receiving medical treatment for bipolar disorder and who report at least some sleep or circadian problems will complete baseline measures and then will be randomly assigned to TRE or the mediterranean diet for 8 weeks, and then will complete measures of symptoms, Quality of Life, and possible treatment mechanisms at the end of treatment and at 3, 6 and 12 months after the intervention. If successful, this work will provide a novel, easily implemented and highly acceptable intervention for BD.