Brief Talk Therapy for Depressed Pregnant Women Linked to Changes in Newborn Brain
A randomized study found that eight sessions of interpersonal therapy for prenatal depression reduced maternal symptoms and produced a smaller hippocampal volume in infants, which was associated with calmer emotional responses.
In a randomized trial involving 234 pregnant participants reporting depressive symptoms, half received MOMCare, an eight-session interpersonal psychotherapy tailored for prenatal depression, while the other half received mental-health education and community referrals. MOMCare cut the rate of diagnosed depression from 36% to 6% and improved the likelihood of carrying the pregnancy to term. Magnetic resonance imaging performed shortly after birth revealed that infants of MOMCare mothers had hippocampal volumes roughly 5% smaller than those of the control group.
When tested at six months, babies with the smaller hippocampi displayed less negative emotional reactions to unfamiliar stimuli, a pattern linked to lower future risk of anxiety and depression. Published in Nature Communications, the study is the first to show that treating maternal depression can shape infant brain structure and early emotional regulation, underscoring the intergenerational benefits of accessible prenatal mental-health interventions.
