Abstract
Background: Prenatal stress could have serious consequences on maternal and fetal health. In this sense, some studies have stated that maternal HCC during pregnancy could contribute to sex-specific effects on infant neurodevelopment, following the Developmental Origins of Health and Disease Hypothesis. Aim: This study aimed to determine whether maternal hair cortisol concentration (HCC) during each trimester of pregnancy and postpartum could predict the neurodevelopmental outcomes of their 12-month-old offspring, with sex-specific differences considered. Study design: longitudinal. Subjects: The study involved 93 pregnant women and their babies. Outcome measure: Hair samples collected during each trimester and postpartum and The Bayley Scales for Infant Development III was used to assess the infants' abilities. Results: The results showed that maternal HCC during the first and second trimesters could predict language and motor abilities. However, when discriminated by sex, only females' cognitive, expressive language, and fine and gross motor skills were predicted by cortisol, not males. Conclusions: These findings support the idea that non-toxic levels of cortisol can positively influence infants' neurodevelopment.
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