Smoke from LA fires exposed millions of people to high levels of toxic heavy metals, study says

🇺🇸 Medical Xpress (US) —
Smoke from LA fires exposed millions of people to high levels of toxic heavy metals, study says

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A study estimates that smoke from the 2025 Los Angeles fires exposed millions of residents to airborne lead levels as high as 80 times typical background levels during a 24-hour period. The findings highlight a significant public-health hazard from wildfire smoke.

At the height of the Los Angeles fires in 2025, millions of residents were exposed in a 24-hour period to toxic lead levels from smoke that were 80 times higher than the typical background level, according to a new study.

World Health Los Angeles fires wildfire smoke lead exposure heavy metals air pollution public health

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