Providing insight into the links between urban interactions and health

By linking air pollutant exposures and metrics of the urban environment that support physical activity (e.g., walkability) to individuals in several cohorts, we will be able to assess the effect of these two potentially counteracting environmental factors. This will mark the first time that we can answer questions such as: where and when in Canada does increased physical activity also increase air pollutant exposure? Does the former outweigh the latter in terms of public health? Are there urban areas in Canada where urban planners have successfully increased physical activity while air pollutant exposures have decreased or at least stayed the same? How can this be achieved more widely and what will the public health benefits be? These are the kinds of questions our stakeholders have identified as crucial to understanding the complex interplay of factors influencing health in the urban environment.