Hair analysis in environmental medicine

Area of Science:

• Environmental Medicine
• Toxicology
• Analytical Chemistry

Background:

• Hair analysis is increasingly used in Germany for biological monitoring of internal metal/metalloid exposure.
• Distinguishing endogenous from exogenous metal sources in hair presents a significant challenge.
• Critical limit values for most trace elements in hair are not yet established.

Purpose of the Study:

• To evaluate the utility of hair analysis for various substances in environmental medicine.
• To determine the effectiveness of hair analysis as a screening method for different exposures.
• To assess the significance of specific elements and compounds in hair for health monitoring.

Main Methods:

• Determination of minerals, trace elements, and drugs in hair samples.
• Application of hair analysis in the field of environmental medicine for biological monitoring.
• Utilizing toxicokinetic data and practical considerations for biomarker selection.

Main Results:

• Hair analysis for aluminum has limited value in environmental medicine.
• Cadmium and inorganic arsenic exposure assessment via hair is suitable for large population screening.
• Lead monitoring in hair is a valuable screening tool, especially for children.
• Hair concentration is the optimal biomarker for methylmercury exposure.
• Nicotine and cotinine in hair effectively estimate environmental tobacco smoke exposure and validate smoker status.

Conclusions:

• Hair analysis offers valuable insights for specific exposures like lead, methylmercury, and nicotine.
• Its application requires careful consideration of limitations, such as distinguishing metal sources and lack of universal limit values.
• Hair analysis serves as a practical tool for screening and monitoring in environmental health and epidemiological studies.