Lead exposures in U.S. Children, 2008: implications for prevention

Area of Science:

• Environmental Health
• Pediatric Public Health
• Toxicology

Background:

• Lead exposure poses significant risks to children's development and lifetime achievement, even at low levels.
• National policies have reduced lead exposure, but many sources persist, contributing to elevated blood lead levels (EBLs).
• No safe threshold for lead exposure effects on children has been identified.

Purpose of the Study:

• To review lead sources in children's environments in the U.S.
• To assess contributions to children's blood lead levels.
• To examine source elimination and control efforts, and federal authorities for achieving the public health goal of eliminating pediatric EBLs.

Main Methods:

• Review of national, state, and local exposure assessments over 50 years.
• Analysis of risk factors for EBLs, including demographics and housing characteristics.
• Synthesis of data on lead exposure sources and their impact.

Main Results:

• Lead paint and dust remain significant sources, potentially accounting for up to 70% of EBLs.
• Over 30% of current EBLs may stem from non-lead paint sources, including consumer products, ethnic remedies, and ceramics.
• Lead in public drinking water and older urban areas are ongoing exposure risks.

Conclusions:

• Achieving the goal of eliminating pediatric EBLs by 2010 necessitates sustained efforts, particularly for lead paint.
• Developing interventions for primary prevention is essential to stop lead poisoning before it occurs.
• Cross-governmental collaboration is vital to identify and control all potential lead exposure sources.