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. 2022 Dec 15;14(24):5332. doi: 10.3390/nu14245332

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Summary analysis of cognitive function (A) Forest plot of the effect of iron supplementation on intelligence in children and adolescents. (B) Meta-regression analysis on the dose of the effect of iron supplementation on intelligence in children and adolescents. (C) Forest plot of the effect of iron supplementation on short-term memory in children and adolescents. (D) Forest plot of the effect of iron supplementation on school performance in children and adolescents [20,26,27,29,30,31,32].