Breastfeeding, prenatal depression and children’s IQ and behaviour: a test of a moderation model

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Abstract

Background: We aimed to determine the associations between breastfeeding and children’s neurodevelopment indexed by intelligence quotient (IQ) and emotional and behavioural problems through mid-childhood adjusting for prenatal and postnatal depression and multiple confounders; and to test the novel hypothesis that breastfeeding may moderate the effects of prenatal depression and anxiety on children’s neurodevelopment. Methods: The study is based on women and their children from the longitudinal Avon Longitudinal Study of Parents and Children (n=11,096). Children’s IQ was derived from standardized in-person testing; behaviour problems were assessed according to parent-report; information on breastfeeding, prenatal depression and anxiety and multiple confounders were derived from self-report questionnaires. We conducted hierarchical multiple regression adjusting for several covariates. Results: 43% women were exclusively breastfeeding at 1 month and an additional 16.8% were engaged in mixed or partial breastfeeding. Both exclusive breastfeeding (B = 2.19; SD = 0.36, p =.00) and mixed feeding (B = 1.59; SD= 0.52; p=.00) were positively associated with IQ at 8 years of age, after adjusting for covariates. Exclusive breastfeeding was negatively associated with hyperactivity/attention deficit at 4 years (B = −.30, SD =.05; p

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Amiel Castro, R., Glover, V., Ehlert, U., & O’Connor, T. G. (2021). Breastfeeding, prenatal depression and children’s IQ and behaviour: a test of a moderation model. BMC Pregnancy and Childbirth, 21(1). https://doi.org/10.1186/s12884-020-03520-8

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