Serum ferritin in children with Attention Deficit Hyperactivity Disorder (ADHD): A systematic review and meta-analysis

CONCLUSION: Lower serum ferritin levels (pooled MD: -9.74) are associated with ADHD in children. Accordingly, screening for serum ferritin and enhanced iron supplementation should be considered in this population. Future longitudinal studies are needed to clarify the causal relationship between iron deficiency and ADHD severity.

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