
Motherhood reshapes the brain: pregnancy trims grey matter to aid bonding
A BeMother study of 127 pregnant women and 32 nonpregnant controls found a ~5% reduction in grey matter during pregnancy, especially in regions linked to social cognition; greater shrinkage correlated with stronger self-reported bonding with the baby. Rising estrogen tracked with the brain changes. Grey matter partially recovered by six months postpartum but not fully, with more complete recovery linked to lower hostility toward the baby and better attachment, suggesting pregnancy-related brain remodeling may support adaptive maternal behavior and maternal mental health.













