Home›Neurology› Preconception environments linked to pregnancy-related brain remodeling and better maternal mental health in a Singaporean cohort
Preconception environments linked to pregnancy-related brain remodeling and better maternal mental health in a Singaporean cohortPreconception lifestyle choices may shape brain resilience during pregnancy
medRxivPublished April 30, 2026Study authors: Qian, X.; Chan, S. Y.; Loh, W. L.; Rifkin-Graboi, A.; Eriksson, J. G.; Fortier, M. V.; Chong, Y. S.;…DOI ↗Editorial oversight: Dr. Ji-eun Park, MD · Brain, Mind & Pain
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Key Takeaway
Note that preconception environments associate with pregnancy-related brain remodeling and better maternal mental health in this Singaporean cohort.
This observational cohort study included 194 participants in the preconception phase and 61 participants in the postpartum phase within the Singaporean S-PRESTO preconception cohort. The population was followed from preconception to three months postpartum, with offspring assessed at age four. The study examined preconception environments, including lifestyle, sociodemographic, psychological, and social-support variables, comparing them against normative age trends for gray matter volume trajectories.
The main results indicated that pregnancy-related gray matter volume reductions occurred in the default mode, frontoparietal control, salience, and limbic networks, as well as the hippocampus and caudate. A higher preconception brain gray matter volume was associated with more advantaged socioeconomic status, healthier diet, better sleep, non-smoking, stronger social support, and higher conscientiousness or lower neuroticism. This environment-associated brain pattern related to better maternal executive function, lower depression, anxiety, stress, and more favorable metabolic health.
Additionally, the same brain resilience pattern predicted lower postpartum anxiety and fewer offspring internalizing symptoms at age four. Safety data, adverse events, and discontinuations were not reported. Tolerability was not reported. Key limitations include uncertainty regarding whether modifiable preconception environments shape individual variability in pregnancy-related brain remodeling and whether these environment-shaped brain features relate to subsequent maternal and offspring mental health.
The practice relevance implicates modifiable preconception environments in shaping brain structural resilience to pregnancy-related remodeling. This highlights preconception as a potential window to promote maternal brain health and positive intergenerational mental health outcomes. The study is observational, so association versus causation is not explicitly distinguished beyond the language used in the abstract.
Pregnancy changes a woman's brain. This is normal. But new research from Singapore asks what happens before the baby arrives. The study looked at women from before conception until their child was four years old. It found that how you live before pregnancy matters for your brain during this time.
Women who had better sleep, ate healthier, had strong social support, and did not smoke showed different brain patterns. These patterns involved areas that help with thinking and emotions. The study calls these changes brain remodeling. They are structural changes in the brain that happen naturally during pregnancy.
These healthier brain patterns were linked to better mental health for the mother. Moms had less depression, anxiety, and stress. They also had better metabolic health. Their children showed fewer signs of internalizing symptoms like sadness or withdrawal at age four. The study suggests that building resilience before pregnancy helps protect both mom and child.
What this means for you:
Healthy habits before pregnancy may help mothers and children handle the brain changes of childbirth.
Study Details
Study typeCohort
Sample sizen = 194
EvidenceLevel 3
PublishedApr 2026
View Original Abstract ↓
Pregnancy is accompanied by structural brain remodeling in networks supporting socio-emotional processing and cognitive control. However, it remains unclear whether and how modifiable preconception environments shape individual variability in pregnancy-related brain remodeling, and whether such environment-shaped brain features relate to subsequent maternal and offspring mental health. Here we leverage the Singaporean S-PRESTO preconception cohort, with brain structural MRI acquired before conception (PCV; n = 194) and at 3 months postpartum (PNV; n = 61). Age-related gray matter volume (GMV) trajectories were modeled based on PCV data to derive longitudinal region-wise deviation scores, accounting for normative age trends. Pregnancy-related GMV reductions were found in default mode, frontoparietal control, salience, and limbic networks, as well as hippocampus and caudate. We then identified a multivariate pattern linking preconception lifestyle, sociodemographic, psychological, and social-support variables to GMV within these pregnancy-vulnerable brain regions using partial least squares approach. Specifically, higher preconception brain GMV was associated with more advantaged socioeconomic status, healthier diet, better sleep, non-smoking, stronger social support, and higher conscientiousness/lower neuroticism. This environment-associated brain pattern relates to better maternal executive function, lower depression, anxiety, stress and more favorable metabolic health. Importantly, the same brain resilience pattern also predicted lower postpartum anxiety and fewer offspring internalizing symptoms at age four. Together, these findings implicate modifiable preconception environments in shaping brain structural resilience to pregnancy-related remodelling and highlight preconception as a potential window to promote maternal brain health and positive intergenerational mental health outcomes.
