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Micronutrients and diarrheal disease.

Christa L Fischer Walker1, Robert E Black

  • 1Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA.

Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America
|July 14, 2007
PubMed
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Vitamin A supplementation reduces child mortality but not diarrhea incidence. Daily zinc supplementation is now recommended to shorten diarrhea duration and severity in young children.

Area of Science:

  • Pediatrics
  • Nutritional Science
  • Public Health

Background:

  • Diarrhea is a major cause of mortality in children under five, often worsened by malnutrition.
  • Micronutrient deficiencies significantly impact child health and disease outcomes.

Purpose of the Study:

  • To evaluate the efficacy of Vitamin A, zinc, and folic acid supplementation in preventing and treating diarrhea in children.
  • To inform public health recommendations for micronutrient interventions in pediatric diarrhea management.

Main Methods:

  • Review of studies on Vitamin A supplementation for mortality reduction and diarrhea morbidity/severity.
  • Analysis of research on zinc supplementation for both prophylactic and therapeutic use in pediatric diarrhea.
  • Assessment of folic acid's role in diarrheal disease prevention and treatment.

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Main Results:

  • Vitamin A supplementation (every 6 months) reduced child mortality by 23% but did not impact overall diarrhea morbidity or treatment duration.
  • Regular zinc supplementation reduced diarrhea prevalence and mortality.
  • Short-course daily zinc supplementation significantly shortened diarrhea duration (15%-24%) and severity, leading to current treatment recommendations.
  • Folic acid supplementation showed no significant benefit for diarrheal disease.

Conclusions:

  • Vitamin A is crucial for reducing child mortality but not a primary treatment for diarrhea.
  • Zinc supplementation, particularly short-course daily regimens, is effective and recommended for treating childhood diarrhea.
  • Folic acid is not effective for managing diarrheal diseases in children.