The association between lead and micronutrient status, and children's sleep, classroom behavior, and activity

Katarzyna Kordas, K. Marcela Casavantes, Cristina Mendoza, Patricia Lopez, Dolores Ronquillo, Jorge L. Rosado, Gonzalo García Vargas, Rebecca J. Stoltzfus

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

The role of lead exposure or micronutrient deficiencies in children's sleep problems is unknown. Although elevated blood lead concentrations (BPb) are clearly related to behavior problems in children, few researchers have used objective observations. The authors investigated relationships between lead, micronutrient status, sleep, classroom behavior, and activity in Mexican children aged 6-8 years living close to a metal foundry. Mean BPb was 11.5 ± 6.1 μg/dL; 50% had levels ≥ 10 μg/dL. Ten percent of children had hemoglobin < 12.4 g/dL. Parents reported on children's sleep and fatigue (n 550). The authors also observed classroom behavior (n = 157) and measured physical activity (n = 168). BPb ≥ 10 μg/dL was associated with later waking time and shorter duration of sleep. Anemia was linked to more off-task behaviors, lower physical activity, earlier bedtime, and shorter sleep onset. Researchers should investigate these relationships further, using more sensitive measures.

Original languageEnglish (US)
Pages (from-to)105-112
Number of pages8
JournalArchives of Environmental and Occupational Health
Volume62
Issue number2
DOIs
StatePublished - Jan 1 2007

All Science Journal Classification (ASJC) codes

  • Toxicology
  • Environmental Science(all)
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

Fingerprint Dive into the research topics of 'The association between lead and micronutrient status, and children's sleep, classroom behavior, and activity'. Together they form a unique fingerprint.

  • Cite this

    Kordas, K., Casavantes, K. M., Mendoza, C., Lopez, P., Ronquillo, D., Rosado, J. L., Vargas, G. G., & Stoltzfus, R. J. (2007). The association between lead and micronutrient status, and children's sleep, classroom behavior, and activity. Archives of Environmental and Occupational Health, 62(2), 105-112. https://doi.org/10.3200/AEOH.62.2.105-112