Psychosocial Intervention for Women With Mood Disorders Seeking Treatment for Obesity

Inclusion Criteria: * Informed of the nature of the study and have agreed to and are able to read, review, and sign the informed consent form. The informed consent document will be written in English, therefore the volunteer must have the ability to read and communicate in English. * Female participants 18 - 65 years of age, inclusive, at the time of screening. * Available and able to attend weekly group meeting on assigned dates. * Diagnosis of major depressive disorder or bipolar disorder by a physician within the past 12 months, as indicated in WMC medical records and confirmed by MINI. * Actively pursuing lifestyle weight management at WMC, with evidence of booked follow-up appointment. * Weight status of at least 25kg/m2, as indicated by data from last appointment at WMC. * Access to a computer and email account in order to complete online questionnaires Exclusion Criteria: * Enrolled in surgical management of obesity at WMC. * Active substance abuse/dependence disorder, current suicidality, or active episode of psychosis. * Presence of a hearing or visual impairment that will prevent completing the online surveys and from participating in a group discussion weekly meeting