Particulate Matter 2.5

How Quickly?
• Measurable changes in the body may take place
within hours of increased exposure, particularly in
people with existing cardiovascular or respiratory
conditions
• “... if you are aged 75 and older, you have a
considerably increased risk of having a heart attack
within two hours of a high fine particle episode ...”,
“...That risk doubles if you already have heart or
respiratory disease.” {Pope et al., 2002}