Does iron help kids think better?
Effect of iron supplements on cognitive development in children: an umbrella review
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Iron supplementation had no meaningful effect on school achievement, even in anemic children who showed improved attention and memory.
Most people assume that if a child’s brain functions better, they’ll naturally do better in school — but this study proves cognitive gains don’t automatically equal academic gains.
Practical Takeaways
Get your child tested for iron deficiency before giving supplements — don’t guess.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Iron supplementation had no meaningful effect on school achievement, even in anemic children who showed improved attention and memory.
Most people assume that if a child’s brain functions better, they’ll naturally do better in school — but this study proves cognitive gains don’t automatically equal academic gains.
Practical Takeaways
Get your child tested for iron deficiency before giving supplements — don’t guess.
Publication
Journal
Frontiers in Nutrition
Year
2026
Authors
L. Caballero-Apaza, H. Arbildo-Vega, Vilma Mamani-Cori, T. Padilla-Cáceres, F. Cruzado-Oliva, C. A. Farje-Gallardo, Rubén Aguirre-Ipenza, H. Vásquez-Rodrigo, Sara-Antonieta Luján-Valencia, Joan-Manuel Meza-Málaga, T. Castillo-Cornock, F. Coronel-Zubiate
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Claims (6)
If your body doesn't get enough iron or B12 over a long time, you might feel foggy-headed and less motivated to get things done.
Giving iron supplements to young kids who don’t have enough iron in their blood might help them do a little better on tests that measure how smart they are, especially in places where many kids are iron-deficient.
Giving iron pills to kids who aren’t anemic doesn’t seem to make them smarter, better at remembering things, or more focused — their brain skills stay about the same.
Giving iron supplements to kids who don’t have enough iron in their blood might help them remember things a little better, especially stuff like learning new names or where they put their toys.
Giving iron supplements to kids who don’t have enough iron in their blood might help them pay attention better and focus more, especially if they’re between 2 and 12 years old.