Exposure to air pollution is associated with an increased risk of dementia; the presence of cardiovascular disease enhances this association.
Why this matters
Evidence concerning the link between air pollution and dementia is sparse and inconsistent.
Studies have identified high levels of air pollution as a risk factor for cardiovascular disease (CVD).
Considering the established link between cardiovascular burden and dementia it is possible that CVD plays a role in the association between air pollution and dementia.