With the growing concern – especially in the Northeast – about the air pollution now coming from the Canadian forest fires, we thought it would be worthwhile to address the potential health effects, especially the difference between acute and chronic.
Most of the daily air pollution studies on health have focused on statistical significance to establish the existence of the phenomenon, which has already been shown by the Great London Fog of 1952, during which black smoke levels increased about 10-fold, and thousands died over several days. The scientific community would be better served by addressing epidemiological and physiological questions.
excess deaths from air pollution
In an essay in the London Review of Books, David Wallace-Wells contrasted the 5.5 million annual global deaths from COVID [1] with the 7 million deaths attributed to air pollution (AP) projected by the World Health Organization [2]; he bemoaned the lack of attention being given to the latter. [1] He noted that other AP mortality estimates run as high as 8.7 million and 10 million if indoor air pollution were included. This is getting downright scary.
The first general alarm about the lethal effects of community air pollution was sounded in London in December 1952 during a severe fog episode that shut the city down and flooded hospitals and morgues. Subsequent media discussions about the benefits of cleaner air often cite the World Health Organization's global estimate of 7 million air pollution-related deaths annually (about 12% of the total), primarily based on studies of long-term mortality differences among US cities during previous decades. More recent publications have focused on short-term temporal associations. So how do long- and short-term analyses relate?