Association between heavy metals exposure and risk of attention deficit hyperactivity disorder (ADHD) in children: a systematic review and meta-analysis.

Heavy metals can negatively affect children's neurodevelopment, yet the relationship between heavy metals exposure and attention deficit hyperactivity disorder (ADHD) in children remains unclear. We aimed to examine associations between exposure to five common heavy metals (lead, arsenic, mercury, c...

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Publicado en:European Child & Adolescent Psychiatry Vol. 34; no. 3; pp. 921 - 942
Autores principales: Gu, Qianfei, Liu, Jiayu, Zhang, Xuanzhi, Huang, Anyan, Yu, Xinle, Wu, Kusheng, Huang, Yanhong
Formato: meta analysis research systematic review Journal Article
Publicado: Springer Nature Mar2025
Acceso en línea:Ver este registro en EBSCOhost
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        atl: Association between heavy metals exposure and risk of attention deficit hyperactivity disorder (ADHD) in children: a systematic review and meta-analysis.
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        au:
          Gu, Qianfei
          Liu, Jiayu
          Zhang, Xuanzhi
          Huang, Anyan
          Yu, Xinle
          Wu, Kusheng
          Huang, Yanhong
        affil: https://ror.org/01a099706 School of Public Health, Shantou University, Shantou, Guangdong Province, China
      sug:
        subj:
          Attention Deficit Hyperactivity Disorder Risk Factors
          Metals, Heavy Adverse Effects
          Neurotoxicity Syndromes
          Environmental Exposure Adverse Effects
          Risk Assessment
          Human
          Child
          Lead Blood
          Arsenic Blood
          Mercury Blood
          Cadmium Blood
          Manganese Blood
          PubMed
          Embase
          Systematic Review
          Meta Analysis
          Descriptive Statistics
          Odds Ratio
          Confidence Intervals
          Dose-Response Relationship
          Probability
          Attention Deficit Hyperactivity Disorder Diagnosis
          Funding Source
          Child: 6-12 years
      ab: Heavy metals can negatively affect children's neurodevelopment, yet the relationship between heavy metals exposure and attention deficit hyperactivity disorder (ADHD) in children remains unclear. We aimed to examine associations between exposure to five common heavy metals (lead, arsenic, mercury, cadmium, and manganese) with neurodevelopmental toxicity and the risk of ADHD in children. Online databases of PubMed, Web of Science, and Embase were searched before February 29, 2024. A total of 31 studies involving 25,258 children were included in the final analysis. Our findings revealed that lead exposure was positively associated with ADHD risk in children (OR = 1.95, 95% CI: 1.57–2.41) overall, while the associations varied among different WHO regions, with the strongest in the Americas. Sensitivity analyses revealed significant associations between arsenic (OR = 1.53, 95% CI: 1.01–2.32) and manganese (OR = 1.79, 95% CI: 1.28–2.49) exposure and ADHD risk after omitting one study. Arsenic exposure was positively associated with ADHD risk in studies conducted in the Americas and adjusted for environmental smoke exposure. Positive associations between manganese exposure and ADHD risk were also found in several subgroup analyses. No significant associations were found for mercury and cadmium exposure. Dose-response meta-analysis suggested that children with higher blood lead levels exhibited a higher probability of ADHD diagnosis. Lead exposure consistently increases the risk of ADHD in children, while arsenic and manganese exposure may be associated with ADHD under different occasions. More research is required to understand heavy metals' impact on ADHD across varying exposure levels, particularly in less contaminated regions.
      pubtype: Academic Journal
      doctype:
        meta analysis
        research
        systematic review
        Journal Article
      ougenre: Article
    language: English
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