Amsterdam UMC Finds 2nd Pregnancy Rewires Brain Networks in 110-Woman Study
Updated
Updated · ScienceDaily · Jul 13
Amsterdam UMC Finds 2nd Pregnancy Rewires Brain Networks in 110-Woman Study
3 articles · Updated · ScienceDaily · Jul 13
Summary
A 110-woman longitudinal study found a second pregnancy changes the brain again, but with a distinct pattern from the first rather than simply repeating earlier shifts.
Brain scans showed first pregnancies most strongly altered the default mode network, while second pregnancies produced smaller changes there and larger shifts in attention and sensory-processing networks.
Researchers linked pregnancy-related cortical changes to peripartum depression in both groups, with the association appearing mainly after birth for first-time mothers and during pregnancy for women expecting a second child.
Mother-child bonding was also tied to brain changes, more strongly after a first pregnancy, suggesting each pregnancy leaves its own imprint and could help refine detection and treatment of maternal mental health problems.
A second baby rewires the brain differently than the first. What does this reveal about the evolving demands of motherhood?
If pregnancy rewires the brain for motherhood, what are the long-term cognitive advantages that last a lifetime?
Can brain scans now predict a mother's risk of postpartum depression before the baby is even born?
The Maternal Brain Transformed: Lifelong Adaptations, Mental Health, and the Science of Parenting
Overview
Pregnancy triggers profound physiological and neuroendocrine changes that reach into the brain, leading to widespread and lasting alterations in brain structure and function. These changes, first observed in first-time mothers, have been confirmed globally and are now known to affect key neural networks like the default mode network. Recent research shows that each pregnancy, not just the first, leaves a unique and permanent mark on the maternal brain, reflecting the ongoing demands of motherhood. This continuous brain adaptation highlights the remarkable plasticity of the maternal brain and its essential role in supporting mothers through the challenges of parenting.