How wildfire smoke affects the body: Doctors warn of health hazards

The Los Angeles wildfires have caused devastating losses of homes and lives — and survivors may also face hidden, although still potentially very dangerous, health effects.

Wildfire smoke contains a "complex mixture" of fine particles that can pose hazards after just short-term exposure, according to the U.S. Environmental Protection Agency (EPA).

Known as PM2.5, or particulate matter, these microscopic particles and droplets are 2.5 micrometers or less in diameter.

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