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Dietary magnesium, potassium, sodium, and children's lung function.

Frank D Gilliland1, Kiros T Berhane, Yu-Fen Li

  • 1Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA. gillian@hsc.usc.edu

American Journal of Epidemiology
|January 16, 2002
PubMed
Summary

Low dietary intake of magnesium and potassium is linked to reduced lung function in adolescents. This finding highlights the importance of these minerals for respiratory health in children and teenagers.

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Area of Science:

  • Pediatric Pulmonology
  • Nutritional Epidemiology
  • Environmental Health

Background:

  • Adolescent respiratory health is influenced by various factors, including nutrition.
  • Specific mineral deficiencies may impact lung development and function.
  • Previous research has suggested links between diet and lung capacity, but specific mineral roles require further investigation.

Purpose of the Study:

  • To examine the association between dietary intake of magnesium, potassium, and sodium and lung function in adolescents.
  • To identify potential sex-specific differences in these associations.
  • To explore the impact of asthma status on these relationships.

Main Methods:

  • Cross-sectional study of 2,566 adolescents (aged 11-19) in Southern California.

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  • Data collection included validated food frequency questionnaires and spirometric pulmonary function tests.
  • Statistical analyses assessed associations between nutrient intake and lung function parameters, stratified by sex and asthma status.

    • Main Results:

    • Low magnesium intake was associated with reduced lung function in both boys and girls.
    • Girls with low magnesium intake showed significantly lower forced expiratory flow rates, especially those with asthma.
    • Low potassium intake was also linked to decreased forced vital capacity and forced expiratory volume in 1 second in girls.

    Conclusions:

    • Dietary magnesium and potassium are important for maintaining adequate lung function in adolescents.
    • Inadequate intake of these minerals may contribute to reduced lung volumes and flows, particularly in girls.
    • These findings underscore the significance of balanced nutrition for pediatric respiratory health.