Second Pregnancy Rewires Brain Differently Than First
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- Amsterdam UMC researchers tracked 110 women over time and found that a second pregnancy alters brain structure and function in patterns distinct from a first pregnancy.
- Elseline Hoekzema's team showed that while the Default Mode Network changes most during a first pregnancy, a second pregnancy produces stronger changes in attention and sensory-response networks.
- Milou Straathof analyzed the data and noted that second-pregnancy brain changes may support the demands of caring for multiple children by enhancing attention and sensory cue responsiveness.
- The study linked pregnancy-related brain changes to maternal bonding, finding the connection stronger after a first pregnancy than a second.
- Researchers identified associations between cortical brain changes during pregnancy and peripartum depression, with timing differences based on pregnancy history.
Why it matters: This research shifts the understanding of maternal brain adaptation from a one-time transformation to an evolving process, with immediate implications for diagnosing and treating peripartum depression in both first and subsequent pregnancies based on distinct neurological patterns.
