Review maps long-term health risks from historical metal mining in England and Wales
Unlike many other pollutants, toxic metals do not break down in the environment. Although they may become diluted over time, they can remain in landscapes for centuries, posing potential risks to wildlife, livestock, ecosystems and people.
This review examines the long-term health risks associated with historical metal mining in England and Wales. Unlike many pollutants, toxic metals do not degrade in the environment and can persist for centuries, posing risks to wildlife, livestock, ecosystems and people.
Exposure can have immediate acute effects and long-term chronic effects. Lead, a common contaminant, has no safe exposure level. The review analyzed 255 documents from 1874 to 2025, finding consistent evidence that elevated metal levels in the environment lead to increased levels in wildlife, livestock and humans. Although many studies measured exposure, direct evidence linking metal contamination to health effects in animals remains limited.
Risk assessments have identified areas in England and Wales where environmental metal concentrations may pose health risks to humans. The review highlights knowledge gaps and emphasizes the need for further investigation into health effects in animals, particularly in livestock. The findings aim to inform future research, monitoring and policy to mitigate the long-term environmental and health impacts of historical mining activities.
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