Talk therapy for pregnant women may shape baby's brain development, study finds

Talk therapy for depression during pregnancy can shape how a baby's brain develops before birth. A new study published in Nature Communications explored how a brief talk therapy called MOMCare affects pregnant women and their babies.

Study Details

MOMCare consists of eight 50-minute sessions focused on building interpersonal skills, reducing conflict and strengthening social support. Researchers enrolled 234 pregnant women who reported depression symptoms during routine prenatal visits in the first or second trimester. Women were randomly split into two groups. One group received MOMCare while the other received mental health education, symptom management strategies and community therapy referrals. Both groups continued their normal medical care. A previous publication showed that 36% of enrolled moms were diagnosed with depression before getting MOMCare, compared to just 6% after it. Women who got MOMCare were also more likely to carry their baby to term, which helps shorten hospital stays after birth and improves child health and school performance.

Brain Scans

In the current study, researchers measured the volume of different baby brain areas using magnetic resonance imaging, or MRI, within a few weeks of birth. An area called the hippocampus, which handles learning, memory and emotional regulation, was 5% smaller by volume in babies whose mothers received MOMCare compared to the other group. Six months later, labs tested the babies' emotional responses to unfamiliar experiences, such as a noisy dancing toy robot. Babies with a smaller hippocampal volume at birth tended to respond less negatively than babies with larger volumes. Depression affects up to 1 in 5 women during pregnancy and raises the risk of high blood pressure, preterm birth, and mental illness in the child. Researchers note that pregnancy offers a unique chance to improve the health of both mother and baby because women have more healthcare contact during this time.

Context

MOMCare represents a targeted, noninvasive and relatively low-cost mental health intervention that shows clear benefits over standard care alone. Prenatal mental health support programs aim to address health risks early, benefiting both mothers and their developing infants.