Objective: Understanding the relevance of religion or spirituality (R/S) in the treatment of mental disorders is central to clinical and academic psychiatry. In this secondary analysis, associations of R/S with depression were investigated with respect to a new second-generation mindfulness-based intervention, the Meditation-Based Lifestyle Modification (MBLM) program. Methods: Different aspects of spirituality, spiritual coping, and spiritual engagement were assessed in 81 patients with a diagnosis of mild-to-moderate depression. Treatment effects on R/S postscores and predictor and moderation effects of depression severity and stress change-scores were evaluated at 8 weeks (MBLM vs. CONTROL [drug continuation therapy] vs. TAU [inpatient treatment as usual]) and 6 months (TAU+MBLM vs. TAU). Results: At both time points, significant differences between MBLM versus TAU and CONTROL were found in a range of spiritual outcomes, most of them with a medium-to-large effect size and in favor of MBLM. Baseline interest in spirituality (p = 0.001) and baseline spiritual mind-body practice (p = 0.017) were identified as independent predictors of change in depression severity at 6 months. Moreover, moderation analyses found that patients reporting often/regular spiritual mind-body practice at 6 months did not benefit differently from TAU+MBLM versus TAU (p = 0.437) regarding their change in depression severity and stress, while those reporting no/seldom spiritual mind-body practice at 6 months benefited significantly worse from TAU than from TAU+MBLM (p = 0.002). Conclusions: Participation in the MBLM program resulted in significantly greater increases in spirituality in depressed patients than standard therapy. Interest in spirituality and engagement in spiritual mind-body practices at baseline were positive predictors of clinical outcome in both groups. Patients of any group who regularly performed spiritual mind-body practices benefited equally in terms of antidepressant outcomes, underlining the benefit of these practices within a general therapeutic framework. ClinicalTrials.gov Identifier: NCT03652220.
Keywords: complementary medicine; depression; ethical living; mantra; meditation; mind–body medicine; psychiatry; spirituality; yoga.