Brain development
Maternal Obesity Affects Newborn Brain Wiring
Open access · cc by · source: Europe PMC
Maternal obesity is linked to altered functional connectivity in the brains of newborn infants across networks regulating behavior, taste, reward, and movement.
Key findings
The study revealed significant functional connectivity alterations in infants born to mothers with high body mass index across four functional domains. Specifically, 17 distinct neural pathways showed altered connections, with 14 of these showing stronger, hyper-connected patterns in the high maternal body mass index group. These altered connections were particularly concentrated in brain regions responsible for cognitive control, reward processing, sensory cue processing, and motor control.
Methodology
Researchers performed resting-state functional MRI scans on 38 full-term infants at around 2 weeks of age. The infants were divided based on their mothers' early pregnancy weight: 23 had mothers with normal body mass index, and 15 had mothers with high body mass index. The researchers used a specialized brain atlas to partition the infant brains into 223 distinct regions to evaluate localized and global functional connectivity patterns.
Limitations
This study cannot prove that maternal adiposity directly causes brain differences, as it is a correlational design that cannot rule out other genetic or postnatal factors. Additionally, the small sample size of 38 infants limits the ability to detect more widespread or subtle differences in brain wiring. Lastly, the study lacks long-term behavioral data, so it remains unclear how these early functional brain changes translate to the child's actual cognitive or eating behaviors as they grow.
How this study connects
Role on claims
Each row is a claim on a concept or method page where this paper supports, challenges, or qualifies the statement. Roles are hand-checked — not a model guess.
Early life stress, premature birth, and maternal metabolic factors can alter functional connectivity in the infant brain, affecting emotional and sensory-motor networks shortly after birth.
Evidence for the claim as stated.
Maternal physiological and psychological states during pregnancy, including high body mass index and clinical stress, are associated with altered functional connectivity patterns in neonatal brain networks at birth.
Evidence for the claim as stated.
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