This page last reviewed April 19, 2009
Health Effects of Diesel Exhaust
Diesel engines emit a complex mixture of air pollutants, composed of gaseous
and solid material. The visible emissions in diesel exhaust are
known as particulate matter or PM. In 1998, California identified
diesel exhaust particulate matter (PM) as a toxic air
contaminant based on its potential to cause cancer, premature death,
and other health problems. Diesel engines also contribute to
California's fine particulate matter (PM2.5) air quality problems.
Those most vulnerable are children whose lungs are still developing and
the elderly who may have other serious health problems. Based on year
2005 emissions in California, diesel PM contributes each year to approximately 3,500
premature deaths and thousands of hospital admissions, asthma attacks
and other respiratory symptoms, and lost workdays. Overall, diesel
engine emissions are responsible for the majority of California's known
cancer risk from outdoor air pollutants. In addition, diesel soot
causes visibility reduction and is a potent global warmer. The document
describing Diesel Exhaust as a Toxic Air Contaminant is listed on this
page.
Health Effects Fact Sheets
Below are two fact sheets developed by the ARB, which discuss the health effects of diesel exhaust. They include a two-page summary of the health effects and a longer discussion with references of diesel exhaust health effects.| Summary Fact Sheet | Diesel Health Effects Fact Sheet |
For more information, please contact Dr. Linda Smith at lsmith@arb.ca.gov or (916) 327-8225.