According to a study that will appear in the February 17, 2007 issue of the journal, The Lancet, researchers at the Keck School of Medicine at the University of Southern California found that children who lived within 500 meters of a freeway since age 10 had substantial deficits in lung function by the age of 18 years, compared to children living at least 1,500 meters away.
Children who live near a major highway are also more likely to develop asthma or other respiratory diseases. The report draws upon data from the Children’s Health Study and more than 3,600 children around the age of 10 were evaluated over a period of over 8 years, through high school graduation. Lung function tests were taken during annual school visits, and the study team determined how far each child lived from freeways and other major roads.
USC Keck School of Medicine
State of Childhood Asthma Report