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Duration of breast-feeding and Bayley's Mental Developmental Index at 1 year of age
B J Paine1, M Makrides, R A Gibson
1Department of Paediatrics and Child Health, Flinders University of South Australia, Australia.
Insights
Exclusive breastfeeding duration positively impacts boys' mental development by age one, but not girls'. Further research is needed to confirm these infant development findings.
Area of Science:
- Pediatrics
- Developmental Psychology
- Public Health
Background:
- Breastfeeding is recognized for its benefits to infant health and development.
- Understanding the specific impact of exclusive breastfeeding duration on developmental outcomes is crucial for public health guidance.
Purpose of the Study:
- To investigate the relationship between the length of exclusive breastfeeding and developmental indices in infants at one year of age.
- To determine if breastfeeding duration influences cognitive and psychomotor development.
Main Methods:
- A cohort study of 96 healthy term infants aged 10-14 months was conducted.
- Infants' development was assessed using the Bayley Scales of Infant Development (Mental and Psychomotor Indices).
- Mothers provided retrospective data on breastfeeding duration and socio-demographic variables.
Main Results:
- Exclusive breastfeeding duration significantly predicted higher mental development scores in boys (P < 0.005).
- No significant association was found between breastfeeding duration and mental development scores in girls.
- Breastfeeding duration did not predict psychomotor development scores in either gender.
Conclusions:
- Exclusive breastfeeding duration may positively influence boys' mental development, suggesting a potential gender-specific effect.
- These findings highlight the importance of considering gender in future research on infant development and breastfeeding.
- Larger, prospective studies are recommended to validate these results and explore underlying mechanisms.
Objective:
To examine the association between duration of exclusive breast-feeding and developmental indices in initially breast-fed infants at 1 year of age.
Methodology:
A cohort of 96 healthy term infants, aged between 10 and 14 months, were recruited from public immunization clinics and child care centres in southern metropolitan Adelaide. Infants were assessed using the Bayley Scales of Infant Development (Mental and Psychomotor Developmental Indices) within 2 weeks of enrollment. Information regarding duration of breast-feeding was provided retrospectively by the mothers of the infants. Duration of exclusive breast-feeding and socio-demographic variables were used as independent variables to determine their effects on development.
Results:
Due to a significant interaction between duration of breast-feeding and gender on mental development scores, separate regression models for boys and girls were explored. Duration of breast-feeding significantly predicted mental development scores for boys (partial r2 = 0.14, P < 0.005), but not for girls. Duration of breast-feeding did not predict psychomotor development scores.
Conclusions:
These findings deserve further examination in large, prospective studies.