How does Nitrogen Dioxide (NO2) affect human health?
2.1 Studies on human populations indicate that long-term exposure to NO2 levels currently observed in Europe may decrease lung function and increase the risk of respiratory symptoms such as acute bronchitis and cough and phlegm, particularly in children. Even though some studies have shown associations between NO2 exposure and mortality, present evidence is not sufficient to conclude that effects on mortality can be attributed to long-term exposure to NO2 itself (see also 3.3). More…