High Blood Lead Levels as A Risk Factor of Stunting: A Study of Children in Agricultural Areas

Agricultural area Children Lead exposure Risk factor Stunting

Authors

  • Alfan Afandi Doctoral Program, Faculty of Public Health, Diponegoro University, Semarang 50275, Indonesia
  • Suhartono Suhartono
    suhartono_damas@yahoo.com
    Department of Environmental Health, Faculty of Public Health, Diponegoro University, Semarang 50275, Indonesia
  • Budiyono Budiyono Department of Environmental Health, Faculty of Public Health, Diponegoro University, Semarang 50275, Indonesia
  • Ani Margawati Department of Nutrition, Medicine Faculty, Diponegoro University, Semarang 50275, Indonesia
  • Apoina Kartini Department of Public Health Nutrition, Faculty of Public Health,Diponegoro University, Semarang 50275, Indonesia
January 31, 2025

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Introduction: The prevalence of stunting among student aged children in Indonesia is relatively high (24.5%). Stunting can threaten the quality of human resources one day. Lead exposure, particularly from pesticides, is thought to disrupt children's development and growth. This study aims to demonstrate that high blood lead levels (BLL) is a risk factor of stunting for children who lives in agricultural areas through the intermediate variable, namely interference with growth hormone (IGF-1). Methods: This study used a case-control design, involving 35 cases (children with HAZ scores of less than -2 SD) and 40 controls (children with HAZ scores of more than -1.5 SD). BLL were measured using the atomic absorption spectrophotometer (AAS) method. Meanwhile, insulin-like growth factor-1 (IGF-1) levels using an ELISA kit (R&D Systems). BLL variables and IGF-1 levels were determined using the receiver operating characteristic (ROC) curve. Results and Discussion: High BLL (>20.44 μg/dL) and low IGF-1 levels (<100 ng/ml) were identified risk factors for stunting in children in agricultural areas with odd ratios (OR) od 2.8 (1.1-7.1) and 3.3 (1.3-8.5) respectively. Meanwhile, a negative correlation was discovered between BLL and IGF-1 levels (p = 0.002, r = -0.356). Conclusion: High lead exposure has been proven to be a risk factor for stunting in children in agricultural areas through the process of interference with the growth hormone, namely IGF-1. Efforts to prevent stunting, especially in agricultural areas, need to take into account exposure to environmental toxicants, including lead from pesticides.

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