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Daily iron supplementation on cognitive performance in primary-school-aged children with and without anemia: a
Xiu-Min Guo1, Hui Liu1, Jing Qian2
1Department of Gynaecology and Obstetrics, Liaocheng People's Hospital Shandong, Liaocheng 252000, China.
Insights
Daily iron supplementation does not appear to improve cognitive scores in primary-school-aged children. More research is needed to clarify the effects of iron on cognitive development in this age group.
Area of Science:
- Pediatric Health
- Nutritional Science
- Cognitive Development
Background:
- Anemia and iron deficiency are significant public health issues in children.
- Previous studies suggest a link between iron deficiency anemia and impaired cognitive development.
- The impact of iron supplementation on cognitive function in school-aged children requires further investigation.
Purpose of the Study:
- To evaluate the efficacy of daily iron supplementation on cognitive performance in primary-school-aged children.
- To synthesize evidence from randomized and quasi-randomized controlled trials.
Main Methods:
- Systematic review and random effects meta-analysis of controlled trials.
- Searched electronic databases (MEDLINE, Wangfang) and other sources up to August 2015.
- Included studies focused on children aged 5-12 years receiving daily iron supplementation.
Main Results:
- Five full-text papers involving 1825 children were included in the analysis.
- Iron supplementation did not demonstrate a significant improvement in global cognitive scores (Mean difference 1.05, 95% CI -2.69 to 4.79).
Conclusions:
- Current evidence does not support the use of daily iron supplementation to enhance global cognitive outcomes in primary-school-aged children.
- Further research is necessary to definitively understand the role of iron supplementation in cognitive development for this population.
Abstract:
Anemia is an important public health and clinical problem. Observational studies have linked iron deficiency and anemia in children with many poor outcomes, including impaired cognitive development. In this study, we summarize the evidence for the effect of daily iron supplementation on cognitive performance in primary-school-aged children. We searched electronic databases (including MEDLINE and Wangfang database) and other sources (August 2015) for randomized and quasi-randomized controlled trials involving daily iron supplementation on cognitive performance in children aged 5-12 years. We combined the data using random effects meta-analysis. We identified 3219 studies; of these, we evaluated 5 full-text papers including 1825 children. Iron supplementation cannot improve global cognitive scores (Mean difference 1.05, 95% confidence interval [CI] -2.69 to 4.79, P<0.01). Our analysis suggests that iron supplementation improves global cognitive c outcomes among primary-school-aged children is still unclear.
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