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Developmental changes in salt acceptability in human infants.

G K Beauchamp, B J Cowart, M Moran

    Developmental Psychobiology
    |January 1, 1986
    PubMed
    Summary
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    Infants under 4 months accepted equal amounts of water and saline solution. Older infants and young children showed a developmental shift in salt preference, possibly due to maturation and experience.

    Area of Science:

    • Human physiology
    • Developmental biology
    • Nutritional science

    Background:

    • Human salt intake is crucial for physiological balance.
    • Understanding salt preference development in infants is important for early nutrition.
    • Previous research suggests taste perception changes with age.

    Purpose of the Study:

    • To investigate the developmental changes in salt (sodium chloride) solution acceptance in human infants and young children.
    • To explore the relationship between age and salt preference.
    • To test the hypothesis of postnatal maturation influencing salt taste perception.

    Main Methods:

    • Infants and children were offered water and sodium chloride solutions of moderate concentrations (0.10-0.20 M).
    • Ingestion amounts of both fluids were measured and compared across different age groups.

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  • Participants included human infants less than 4 months, 4-24 months, and children 31-60 months of age.

    • Main Results:

    • Infants under 4 months ingested equal amounts of water and saline solution.
    • Infants aged 4-24 months showed a preference for saline solution over water.
    • Children aged 31-60 months tended to reject saline solution relative to water.

    Conclusions:

    • Salt acceptability in humans undergoes significant developmental changes from infancy to early childhood.
    • Postnatal maturation of sensory pathways likely contributes to altered salt preference.
    • Dietary experience may also play a role in shaping salt acceptance in older children.