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Fine particulate matter from traffic may influence birth weight

culate matter is considered to be a marker of the particles originating from traffic, and in particular from diesel vehicles.

Earlier American Studies had already suggested that fine particulate matter might influence the birth weight. This recent study is the first study from Germany and Western Europe and also the first one to suggest so clearly that traffic-related air pollutants have an influence.

The biological mechanisms which could explain the influence of air pollutants on the growth of the unborn child are not known as yet. Fine particulate matter consists of hundreds of chemical substances. It is conceivable that a minor fraction of the fine particulate matter reaches the blood through the lungs and influences the placenta or other organs which are responsible for regulating the growth of the foetus. Studies from the US and Poland have for example shown that polycyclic aromatic hydrocarbons (PAH), which are produced during incomplete combustion processes, can reach the foetus and influence its growth.


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Contact: Heinz Joerg Haury
oea@gsf.de
00-49-893-187-2460
GSF - National Research Center for Environment and Health
25-Jun-2007


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