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Potential dietary factors for reducing lead burden of Chinese preschool children

Tao Li1, Shuaiming Zhang1, Zangwen Tan1

  • 1Capital Institute of Pediatrics, Beijing, 100020, China.

Environmental Science and Pollution Research International
|June 10, 2019
PubMed

Insights

Dietary interventions show promise for reducing children's blood lead levels (BLLs). Consuming dairy products, fruits, and calcium supplements was linked to lower BLLs in Chinese preschoolers.

Area of Science:

  • Environmental Health
  • Pediatric Nutrition
  • Toxicology

Background:

  • Dietary interventions are common in China for managing childhood lead exposure, but scientific evidence is limited.
  • Lead exposure in children poses significant health risks, necessitating effective management strategies.

Purpose of the Study:

  • To investigate the association between dietary intake, nutritional supplementation, and blood lead levels (BLLs) in Chinese preschool children.
  • To provide evidence for the efficacy of dietary approaches in mitigating lead exposure among young children.

Main Methods:

  • A large-scale study involving 17,859 preschool children from 14 Chinese cities.
  • Data collection included social-demographic factors, environmental information, dietary intake, and capillary blood lead concentration measurements.

Main Results:

  • The average BLL was 34.5 μg/L.
  • Consumption of milk/dairy products, fruits, and calcium supplementation showed a negative dose-response relationship with BLLs.
  • No significant association was found between iron-rich food/supplement intake and BLLs.

Conclusions:

  • Dietary factors, particularly dairy, fruits, and calcium, may play a role in reducing lead levels in preschool children.
  • Further research is required to establish definitive causal relationships between these dietary components and reduced blood lead levels.

Keywords:
Blood leadChinaDietaryPreschool

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