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How much breast milk do babies need?

R G Whitehead, A A Paul, T J Cole

    Acta Paediatrica Scandinavica. Supplement
    |January 1, 1982
    PubMed
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    Breast milk energy needs decrease rapidly in the first six months of life, then increase with infant activity. This finding suggests breast milk can adequately nourish healthy infants for longer than previously recommended.

    Area of Science:

    • Human Nutrition
    • Infant Feeding Practices
    • Pediatric Metabolism

    Background:

    • Current dietary recommendations for infant energy intake are based on assumptions of a linear decline in requirements per kilogram of body weight.
    • Previous assessments may not accurately reflect the dynamic nature of infant energy needs throughout the first year of life.

    Purpose of the Study:

    • To reassess the energy requirements of infants at different ages based on updated data.
    • To evaluate the adequacy of breast milk as the sole food source for infants, particularly within the first six months.
    • To provide practical insights for both breast and bottle feeding.

    Main Methods:

    • Statistical analysis of prospectively collected energy intake data from infants in Cambridge, U.K.
    • Literature survey of cross-sectional food energy intake data from infants in Canada, Sweden, the U.K., and USA.

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    Main Results:

    • Infant energy requirements per kilogram of body weight decline more rapidly in the first six months than previously assumed.
    • Energy needs per kilogram increase after the first six months as infant activity levels rise.
    • Typical breast milk intakes in industrialized nations can meet infant energy needs for healthy growth for extended periods beyond current recommendations.

    Conclusions:

    • Findings challenge the assumption of a linear decline in infant energy requirements.
    • Breast milk is sufficient for healthy infant growth for longer than currently advised by international dietary guidelines.
    • Results have significant implications for understanding infant nutritional needs and informing feeding practices.