Banning lead in gas worked. The proof is in our hair
a day ago
- #environmental health
- #EPA regulations
- #lead exposure
- Prior to the EPA's establishment in 1970, lead exposure in the U.S. was high due to industrial sources, paint, water pipes, and tailpipe emissions.
- A study by University of Utah scientists analyzed hair samples spanning 100 years, showing lead levels were about 100 times higher before EPA regulations.
- Lead is a neurotoxin that accumulates in tissues, linked to developmental deficits in children, but regulations have significantly reduced exposure.
- The study highlights the importance of environmental regulations, noting recent weakening of lead rules under the Trump administration.
- Lead was widely used in paint, pipes, and gasoline for its useful properties, despite its toxicity being well-established by the 1970s.
- Utah's unique family history preservation allowed researchers to collect hair samples dating back a century, providing insights into lead exposure over time.
- Hair analysis revealed lead levels dropped from 100 ppm before 1970 to less than 1 ppm in 2024, paralleling reductions in leaded gasoline.
- The study underscores the role of the EPA in reducing environmental lead and protecting public health.