Informing Implementation of a Circadian-Focused Intervention for Postpartum Depression

Inclusion Criteria: 1. ≤ 6 months postpartum 2. EPDS score \>10 Exclusion Criteria: 1. Current or past-year substance use disorder 2. Lifetime history of bipolar disorder or psychotic disorder 3. Active suicidal intent 4. Retinal pathology or history of eye surgery 5. Current use of photosensitizing medications 6. Untreated sleep-disordered breathing, untreated restless legs syndrome, or narcolepsy 7. Psychotherapy or psychotropic medications started/dose changed in past month (psychotherapy started and/or current medication at stable dose ≥ 4 weeks are permitted) 8. Medical conditions contraindicated for mBLT (e.g., epilepsy/seizures)