Environmental Burden of Lead and Public Health Issues in Nigeria: A Systematic Review of Emerging Evidence.
Polycarp Dauda Madaki, Chiara Frazzoli, James Owupele Ibibama et al.
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In 30 seconds
This systematic review examined the environmental burden of lead exposure in Nigeria, highlighting severe contamination in artisanal mining areas and urban centers. The study found that up to 100% of exposed artisans had blood lead levels (BLL) ≥ 5 µg/dL, with significant health impacts including neurological and renal disorders. The review included 27 studies published from 2004 to 2026.
Key findings
- Soil contamination reached up to 185,000 ppm in northern mining zones.
- Water contamination was found to be 179 times above WHO limits.
- 70-100% of occupationally exposed artisans exhibited BLL ≥ 5 µg/dL.
- Health consequences include neurological, renal, hematological, endocrine, and cardiovascular issues.
Why it matters
Lead exposure poses significant health risks, particularly in vulnerable populations such as children and occupationally exposed workers. Understanding the extent of contamination and its health impacts is crucial for public health interventions and policy formulation.