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Environmental lead risk in the 21st century
Mengli Chen1, Ludovica Gazze2, Francis J DiTraglia3
1Tropical Marine Science Institute, National University of Singapore, Singapore, Singapore.
Global lead production is rising, increasing environmental lead exposure and posing significant public health risks. Urgent policy interventions are needed to prevent a resurgence of lead exposure, especially in low- and middle-income countries.
Area of Science:
- Environmental Science
- Public Health
- Toxicology
Background:
- Lead has been historically vital for technology but poses environmental and health risks.
- Global lead production is increasing due to electrification demands.
- Legacy contamination and ongoing uses contribute to persistent environmental lead exposure.
Purpose of the Study:
- To critically assess contemporary environmental lead risks.
- To evaluate the impact of rising global lead production and use.
- To identify policy interventions to prevent increased lead exposure.
Main Methods:
- Systematic review of contemporary environmental lead risks.
- Analysis of global lead production and usage trends.
- Economic impact assessment of childhood lead exposure.
Main Results:
- Environmental lead exposure persists due to legacy contamination, coal use, and inadequate workforce protection in lead-acid battery recycling.
- Contemporary childhood lead exposure causes over $3.4 trillion in annual global economic losses.
- Significant economic disparities exist between high-income and low- and middle-income countries.
Conclusions:
- Urgent policy interventions are required to address four critical areas to prevent a resurgence in lead exposure.
- Addressing lead exposure is crucial for global public health and economic stability.
- Focus on low- and middle-income countries is essential due to pronounced disparities.
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