A review of epidemiological research on stroke and dementia and exposure to air pollution

BackgroundOutdoor air pollution is now a well-known risk factor for morbidity and mortality, and is increasingly being identified as a major risk factor for stroke.MethodsA narrative literature review of the effects of short and long-term exposure to air pollution on stroke and dementia risk and cognitive functioning.ResultsTen papers on stroke and 17 on dementia were selected. Air pollution, and in particular small particulate matter, contributes to about one-third of the global stroke burden and about one-fifth of the global burden of dementia. It particularly affects vulnerable patients with other vascular risk factors or a prior history of stroke in low- and medium-income countries. New…