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Event Related Potentials ERPs and other EEG Based Methods for Extracting Biomarkers of Brain Dysfunction: Examples from Pediatric Attention Deficit/Hyperactivity Disorder ADHD
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Blood lead concentrations and attention deficit hyperactivity disorder in Korean children: a hospital-based case

Jae Hong Park1, Ju-Hee Seo2, Young-Seoub Hong2,3

  • 1Department of Psychiatry, College of Medicine, Dong-A University, Dong-A University Hospital, 26 Daesingongwon-ro, Seo-gu, Busan, 602-715, Republic of Korea.

BMC Pediatrics
|September 24, 2016
PubMed

Insights

Elevated blood lead concentrations are a significant risk factor for attention deficit hyperactivity disorder (ADHD) in children. Even low levels of lead exposure can negatively impact neurodevelopment, highlighting the need for environmental lead reduction.

Area of Science:

  • Environmental Health
  • Neurodevelopmental Disorders
  • Pediatric Toxicology

Background:

  • Childhood neurodevelopment is vulnerable to environmental toxins.
  • Lead exposure is linked to neurotoxicity, particularly affecting brain circuits implicated in ADHD.
  • Understanding the relationship between lead and ADHD is crucial for public health.

Purpose of the Study:

  • To investigate if elevated blood lead concentration is a risk factor for ADHD in children.
  • To examine the association between blood lead levels and ADHD symptom severity.

Main Methods:

  • A hospital-based case-control study involving 114 ADHD cases and 114 matched controls.
  • ADHD diagnosis confirmed via semi-structured interviews.
  • Blood lead levels measured using graphite furnace atomic absorption spectrometry.

Main Results:

  • Children with ADHD had significantly higher blood lead concentrations than controls.
  • Higher blood lead levels were associated with an increased risk of ADHD (OR: 1.60).
  • Children with blood lead > 2.30 μg/dℓ had a 2.5-fold greater risk of ADHD; no significant association with symptom severity was found.

Conclusions:

  • Low blood lead concentrations are a confirmed risk factor for childhood ADHD.
  • The findings support primary prevention strategies to minimize environmental lead exposure.
  • Further research is needed to clarify lead's impact on ADHD symptom severity.
Abstract

Keywords:
ADHDChildEnvironmentHeavy MetalLead

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