Document Detail


Zinc supplementation improved length growth only in anemic infants in a multi-country trial of iron and zinc supplementation in South-East Asia.
MedLine Citation:
PMID:  18806109     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Data from 4 randomized, placebo-controlled, double-blind trials in Indonesia, Thailand, and Vietnam, the South-East Asian Multicountry Trial on Iron and Zinc supplementation in Infants (SEAMTIZI), were pooled to investigate the effects of iron and zinc supplementation infant growth. Infants (n = 2451) aged 4-6 mo old were supplemented with iron (10 mg/d) and/or zinc (10 mg/d) for 6 mo. Overall, neither iron nor zinc supplementation prevented the progressive growth faltering during infancy, which is common in many developing countries. However, infants who received zinc were less likely to be stunted at the end of the supplementation period (odds ratio 0.80; 95% CI 0.64-1.0). Boys had a 30% higher risk of being stunted at the end of the study than girls (P < 0.01). Baseline factors modified the effect of supplementation, with infants anemic at baseline (hemoglobin < 105 g/L) benefiting from zinc supplementation, with an estimated increase in height-for-age Z-score (HAZ) score of 0.17 (P < 0.01), but with no effect of zinc supplementation on growth in infants not anemic at baseline. Iron supplementation negatively affected linear growth in infants with a birth weight of >3500 g (estimated effect size, -0. 14 HAZ score; P < 0.01), but with no significant effect in infants with a lower birth weight. This study shows that blanket supplementation of infants with iron or zinc will not be beneficial to all recipients and may have adverse effects in some. Hence, interventions such as iron and zinc supplementation for infants should be restricted to subgroups in which there is a clear benefit and baseline factors should be considered and characterized before implementing new policies.
Authors:
Marjoleine A Dijkhuizen; Pattanee Winichagoon; Frank T Wieringa; Emorn Wasantwisut; Budi Utomo; Nguyen X Ninh; Adi Hidayat; Jacques Berger
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Publication Detail:
Type:  Journal Article; Multicenter Study; Randomized Controlled Trial; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of nutrition     Volume:  138     ISSN:  1541-6100     ISO Abbreviation:  J. Nutr.     Publication Date:  2008 Oct 
Date Detail:
Created Date:  2008-09-22     Completed Date:  2008-12-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0404243     Medline TA:  J Nutr     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1969-75     Citation Subset:  IM    
Affiliation:
Department Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, WC1E 7HT London, UK.
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MeSH Terms
Descriptor/Qualifier:
Anemia / drug therapy*
Body Height / drug effects*
Dietary Supplements*
Double-Blind Method
Female
Growth / drug effects*
Humans
Infant
Iron / administration & dosage,  therapeutic use*
Lactation
Male
Methemoglobin / analogs & derivatives,  metabolism
Sex Characteristics
Zinc / administration & dosage,  therapeutic use*
Chemical
Reg. No./Substance:
0/cyanomethemoglobin; 7439-89-6/Iron; 7440-66-6/Zinc; 9008-37-1/Methemoglobin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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