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http://dx.doi.org/10.3961/jpmph.19.175

The Effect of Prenatal Cadmium Exposure on Attention-deficit/Hyperactivity Disorder in 6-Year-old Children in Korea  

Kim, Woosung (Department of Preventive Medicine, Seoul National University College of Medicine)
Jang, Yoonyoung (Department of Preventive Medicine, Seoul National University College of Medicine)
Lim, Youn-Hee (Institute of Environmental Medicine, Seoul National University Medical Research Center)
Kim, Bung-Nyun (Division of Children and Adolescent Psychiatry, Department of Psychiatry, Seoul National University Hospital)
Shin, Choong Ho (Department of Pediatrics, Seoul National University Children's Hospital)
Lee, Young Ah (Department of Pediatrics, Seoul National University Children's Hospital)
Kim, Johanna Inhyang (Division of Children and Adolescent Psychiatry, Department of Psychiatry, Seoul National University Hospital)
Hong, Yun-Chul (Department of Preventive Medicine, Seoul National University College of Medicine)
Publication Information
Journal of Preventive Medicine and Public Health / v.53, no.1, 2020 , pp. 29-36 More about this Journal
Abstract
Objectives: Prenatal cadmium (Cd) exposure may be associated with attention-deficit/hyperactivity disorder (ADHD) in children. Therefore, the objective of this study was to examine the relationship between Cd exposure during gestation and ADHD at 6 years of age. Methods: As part of an ongoing cohort study (the Environment and Development of Children study), 479 mother-child pairs from Seoul, Korea were included for analysis between 2008 and 2011. The whole blood concentration of Cd was analyzed using atomic absorption spectrophotometry. The parents were surveyed about ADHD behaviors in their children at age 6. Multivariable linear regression models were used to investigate the relationship between prenatal exposure to Cd and ADHD at 6 years of age. Results: Increased prenatal Cd concentrations were associated with increased scores for ADHD for girls, but not for boys, at age 6. A 2-fold increase in the prenatal Cd level was significantly associated with a 22.3% (95% confidence interval, 11.6 to 34.1) increase in ADHD in girls at 6 years of age, as indicated by the linear regression model. Conclusions: Our results identified significant associations between prenatal Cd exposure and ADHD scores in 6-year-old girls.
Keywords
Cadmium; Preschool child; Attention-deficit/hyperactivity disorder; Republic of Korea;
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