Carter T, et al. - Researchers sought to ascertain the efficacy of exercise/physical activity-based interventions in preventing and treating postpartum depressive symptoms in primiparous and multiparous women to the end of the postnatal period at 52 weeks postpartum. Data from published and unpublished randomised controlled trials suggested that exercise-based interventions could create an alternative therapeutic approach for preventing major depression in postpartum women who experience subthreshold elevated depressive symptoms. Most of the exercise interventions identified were aerobic and coaching compared to usual care, non-intervention and active controls. Further assessment of the clinical effectiveness and the cost-effectiveness of exercise-based and physical activity interventions is recommended.