Meta-analysis finds prenatal psychological interventions reduce postpartum depression incidence

BACKGROUND: This study aimed to systematically evaluate the effects of psychological interventions during pregnancy on the intervention outcomes and incidence rate in women with postpartum depression. METHODS: Databases (PubMed, Medline, Web of Science, Cochrane Library, EMBASE) were searched from inception to December 2024 for randomised controlled trials assessing prenatal psychological interventions (e.g., mindfulness, psychosocial support) in pregnant women without severe mental illness. Primary outcomes included Edinburgh Postnatal Depression Scale (EPDS), Patient Health Questionnaire-9 (PHQ-9), Perceived Stress Scale-10 (PSS-10), Spielberger State-Trait Anxiety Inventory (STAI) scores, and PPD incidence within 6 weeks postpartum. Quality was assessed using the Cochrane risk-of-bias tool; meta-analysis was performed with RevMan 5.3. RESULTS: A total of 10 articles were included, with 6700 study subjects in total, including 3345 in the intervention group and 3355 in the control group, all of which were randomised controlled trials. The incidence rate of postpartum depression in the intervention group was significantly reduced (OR = 0.73, 95% CI [0.57-0.95],  = 0.02). The scores of EPDS, PHQ-9, PSS-10, and STAI in the intervention group were all lower than those in the control group. CONCLUSION: Psychological interventions during pregnancy can significantly reduce postpartum depression-related scale scores and incidence rates, and improve depressive symptoms, anxiety, and perceived stress. However, due to the heterogeneity of intervention types, this study cannot determine the optimal intervention method and thus provides preliminary evidence for clinical prevention. Clinicians should select interventions based on resource availability and individual characteristics of pregnant women, while future studies should focus on direct comparisons of different intervention types to provide more targeted guidance.