Healthy Lifestyle Promotion as Adjunctive Teletherapy for Treatment-resistant Major Depression

The main objective of the study will be to evaluate the effectiveness of an adjuvant lifestyle-based intervention for treatment-resistant patients with major depressive disorder. Patients will be allocated to one of these three groups: 1)Treatment prescribed by their mental health team plus written lifestyle change suggestions 2)Treatment prescribed by their mental health team plus written lifestyle change suggestions plus 8-week Mindfulness-based cognitive therapy (MBCT) program 3) Treatment prescribed by their mental health team plus written lifestyle change suggestions plus 8-week lifestyle change promotion program. We will collect patient data using the questionnaires administered at baseline, immediately after the intervention, and at six and 12-month follow-up. The primary outcome will be depression severity and secondary outcomes will include health-related quality of life.