Historical Hair Analysis Shows Dramatic Reduction in Lead Exposure Following EPA Regulations
By
Brajeshwar
Slow-proofed and worth the wait. Worth its weight in flour.
Summary
A new scientific study analyzed historical hair samples spanning 100 years to measure lead exposure in the U.S. population. The research shows that regulations targeting heavy-metal pollution, particularly those implemented after the establishment of the Environmental Protection Agency 55 years ago, were extremely effective at reducing public exposure to lead. The study demonstrates how preserved hair can serve as a historical record of environmental contamination and public health interventions.
Key quotes
· 4 pulledHumans have found lead useful for thousands of years, but the metal's toxic effects didn't become well known until the 20th century.
Now, using historical hair samples, researchers have shown that regulations targeting heavy-metal pollution were extremely effective at reducing the public's exposure to lead once its dangers were known.
We have hair samples spanning about 100 years, study co-author Ken Smith, a demo
A new study reveals the dramatic decrease in lead exposure in the U.S. following the establishment of the Environmental Protection Agency 55 years ago.
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