April 2009 : Traffic-related air pollution correlates with adult-onset asthma among never-smokers.

This is the title of a new paper published on line in Thorax on 8th of April 2009 by N. Künzli and co-workers, based on an analysis of the Sapaldia cohort. Among 2725 never-smokers, 41 reported new asthma between 1991 and 2002. Asthma incidence was associated with change in traffic-related PM10: participants were less likely to develop asthma if TPM10 had decreased at their home address during the 11 years interval. Thus, the data suggest a role for traffic-related pollution in adult-onset asthma. As traffic-related pollution prevails, the finding may be of substantial public health relevance.