Are there proven health risks for snowmobile riders?
Exposure to air pollutants is associated with numerous effects on human health, including increased respiratory symptoms or decreased lung function, hospitalization for heart or lung diseases, or premature death. Recent studies conducted by the National Park Service, Air Quality Division, and other scientists have highlighted the potential effects on human health from exposure to air pollutants, specifically snowmobile emissions. See the Air Quality and Personal Exposure sections for more detail.
