Asthma link to traffic pollution exposure during pregnancy

Children whose mothers were exposed to traffic pollution during pregnancy may be more likely to develop asthma before the age of five, research suggests.

A study in the European Respiratory Journal of more than 65,000 children is one of the largest to look at the link between air pollution and asthma.

Children were tracked until the age of 10 and cases of doctor-diagnosed asthma were noted.