Sydney, Australia, has joined a number of urban centers in North America, Europe, and Asia where higher air pollution levels have been linked with increased mortality.
Public health researchers from New South Wales, Australia, have analyzed major outdoor air pollutants and daily mortality rates in Sydney from 1989 to 1993. They reported that the increase in particulate pollution was associated with a 2.63% increase in mortality of all causes and a 2.68% increase in cardiovascular deaths. Increased ozone concentration was associated with a 2.04% increase in all-cause mortality and a 2.52% increase in cardiovascular deaths.
Voelker R. Deadly Air Pollution. JAMA. 1998;279(22):1771. doi:10.1001/jama.279.22.1771-JWM80003-2-1