
“The air we breathe is filled with cancer-causing substances. Outdoor air pollution is not only a major environmental risk to health in general, it is the most important environmental cancer killer due to a large number of people exposed,” explains Kurt Straif, Ph.D., head of the IARC Monographs Section.
The research found that “tiny dust-like particles – called ‘particulate matter’, or PM – are an important part of air pollution. The smallest particles – less than 2.5 millionths of a meter across, known as PM2.5 – appear to be behind lung cancers caused by pollution.”