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Link to original content: https://doi.org/10.1038/ejcn.2008.9
Global and regional child mortality and burden of disease attributable to zinc deficiency | European Journal of Clinical Nutrition
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Global and regional child mortality and burden of disease attributable to zinc deficiency

European Journal of Clinical Nutrition volume 63, pages 591–597 (2009)Cite this article

Abstract

Background/Objectives:

Zinc is an essential micronutrient and deficiency can lead to an increased risk for infectious diseases and growth retardation among children under 5 years of age. We aimed to estimate disease-specific and all-cause mortality attributable to zinc deficiency.

Subject/Methods:

We estimated the prevalence of zinc deficiency in Latin America, Africa and Asia, where based on zinc availability in the diet and childhood stunting rates, zinc deficiency is widespread. The relative risks of death among zinc-deficient children for diarrhea, malaria and pneumonia were estimated from randomized controlled trials. We used the comparative risk assessment methods to calculate deaths and burden of disease (measured in disability-adjusted life years, DALYs) from each of these three diseases attributable to zinc deficiency in these regions.

Results:

Zinc deficiency was responsible for 453 207 deaths (4.4% of childhood deaths), and 1.2% of the burden of disease (3.8% among children between 6 months and 5 years) in these three regions in 2004. Of these deaths, 260 502 were in Africa, 182 546 in Asia and 10 159 in Latin America. Zinc deficiency accounted for 14.4% of diarrhea deaths, 10.4% of malaria deaths and 6.7% of pneumonia deaths among children between 6 months and 5 years of age.

Conclusions:

Zinc deficiency contributes to substantial morbidity and mortality, especially from diarrhea. Zinc supplementation provided as an adjunct treatment for diarrhea may be the best way to target children most at risk of deficiency.

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Acknowledgements

We acknowledge Juan Rivera for assistance in classifying the countries according to risk of zinc deficiency, Colin Mathers for the GBD estimates of mortality and burden of disease, Rodrigo Dias for his assistance in calculating the disease burden attributable to zinc deficiency and Sunil Sazawal for assistance in calculating the cause-specific RRs of death. This study was funded by grants from the Bill and Melinda Gates Foundation for the Development of the Maternal and Child Undernutrition Series and for the Zinc Task Force. Additional funding was provided by the Johns Hopkins Global Research Activity funded by the United States Agency for International Development.

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Authors and Affiliations

  1. Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA

    C L Fischer Walker & R E Black

  2. Department of Population and International Health, Harvard School of Public Health, Boston, MA, USA

    M Ezzati

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  1. C L Fischer Walker
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  2. M Ezzati
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  3. R E Black
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Correspondence to C L Fischer Walker.

Additional information

Contributors: CLFW wrote the initial draft of the manuscript. REB conceptualized and assisted with the analyses. ME calculated the disease burden attributable to zinc deficiency. All authors contributed to the final manuscript.

Conflict of interest

The authors have no competing interests.

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Fischer Walker, C., Ezzati, M. & Black, R. Global and regional child mortality and burden of disease attributable to zinc deficiency. Eur J Clin Nutr 63, 591–597 (2009). https://doi.org/10.1038/ejcn.2008.9

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