Breastfeeding and early brain development: the Generation R study
Catherine M Herba1, Sabine Roza, Paul Govaert
1Department of Child and Adolescent Psychiatry and Psychology, Erasmus University Medical Center, Rotterdam, the Netherlands.
Insights
Exclusive breastfeeding in the first two months is linked to better infant brain development. This includes larger brain structures like the gangliothalamic ovoid, suggesting a neural advantage for breastfed babies.
Area of Science:
- Neuroscience
- Pediatrics
- Developmental Biology
Background:
- Infant breastfeeding offers numerous short- and long-term health advantages.
- Understanding early brain development markers in relation to infant feeding is crucial.
Purpose of the Study:
- To investigate the association between breastfeeding in the first two months of life and structural brain development markers in infants.
- To determine if exclusive breastfeeding correlates with specific brain structure measurements.
Main Methods:
- Utilized cranial ultrasound data from the Generation R study at approximately 7 weeks post-natal age.
- Measured key brain structures: gangliothalamic ovoid diameter, corpus callosum length, ventricular volume, and head circumference.
- Analyzed associations based on maternal reports of infant feeding practices (exclusive breastfeeding, mixed feeding, bottle-feeding) adjusted for covariates.
Main Results:
- Exclusive breastfeeding was associated with more optimal brain development compared to bottle-feeding or never being breastfed.
- A significant finding was a larger gangliothalamic ovoid diameter in exclusively breastfed infants versus bottle-fed infants.
- Exclusively breastfed infants also showed smaller ventricular volumes and larger head circumferences, indicating a general neural developmental advantage.
Conclusions:
- Breastfeeding in the first two months of life is associated with more mature brain development in infants.
- The gangliothalamic ovoid diameter, a DHA-rich subcortical structure, showed the most consistent association with exclusive breastfeeding.
- Findings suggest a non-specific neural developmental advantage for exclusively breastfed babies within the early postnatal period.
Abstract:
Breastfeeding during infancy is associated with a range of short- and long-term health benefits. We examine whether breastfeeding in the first 2 months of life is associated with structural markers of brain development in infants from the general population. This study was embedded within the Generation R study. Cranial ultrasounds were obtained at approximately 7 weeks post-natal age. The diameter of the gangliothalamic ovoid, corpus callosum length, ventricular volume and head circumference were measured. Maternal reports of breastfeeding were obtained at 2 months of age. We examined associations in relation to current breastfeeding practices (exclusively breastfed, n = 318, breast- and bottle-fed, n = 119, and bottle-fed, n = 243). Analyses were adjusted for head size and relevant covariates. Secondary analyses were conducted for breastfeeding history (exclusively breastfed, n = 318, breast- and bottle-fed, n = 281, and never breastfed, n = 81). Exclusive breastfeeding was associated with more optimal brain development compared with babies who were bottle-fed or never breastfed. Results were most consistent for gangliothalamic ovoid diameter. Larger gangliothalamic ovoid diameters were evident in babies who were exclusively breastfed compared with bottle-fed babies [difference between means (95% confidence interval) = 0.21(0.02, 0.39), P = 0.02]. Smaller ventricular volume and larger head circumference were also found for exclusively breastfed babies. Breastfeeding was not significantly associated with corpus callosum length. Maternal reports of breastfeeding are associated with more mature brain development within the first 2 months of life. Results are most consistent for gangliothalamic ovoid diameter, a subcortical structure rich in docosahexaenoic acid. Findings also pointed to non-specific neural developmental advantage for exclusively breastfed babies.
