Air Pollution and Allergies: A Connection?

Air Pollution and Allergies: A Connection?

The increased rates of allergy and asthma in city environments and in those living close to highways has drawn attention to the role of outdoor pollution. Common air pollutants, such as ozone, sulfur dioxide, and nitrogen dioxide probably act more as irritants than as promoters of sensitization.

These pollutants have been shown to be hazardous to adults and children with asthma. Recent studies suggest that prematurely born children are more sensitive to the respiratory effects of outdoor pollution. There may also be an association with diesel exhaust particles and the worldwide increase in respiratory allergies. Diesel exhaust has been shown to enhance the ability to make the allergy antibody, IgE, in response to exposure to allergens.