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Thuesday, May11th, 2010

The pollution causes reduced fetal growth

The article, published in the journal 'Environmental Health Perspectives', specifies that the fetuses of pregnant women exposed to urban traffic weighing 81.6 grams less than the average growth that occurs between 20 and 32 weeks of gestation. The cause pollution.


Smaller head circumference growth
The study indicates that for each increase 10 (micrograms per m3) in exposure to nitrogen dioxide NO2, or head circumference growth is 6.24 mm, than the average growth between weeks 12 and 20 of gestation increased the is described in the above lines, quite common in large cities. For example, in Sabadell, one of the INMA Project cohort, the mean concentration of NO2 during the study period was 51 micrograms per m3, a concentration a little lower than that of big cities like Barcelona or Madrid. At the same time, there was also a decrease of 6.37 mm in the growth of abdominal circumference of 2.16 mm in the biparietal diameter growth compared to average growth between weeks 20 and 32.


Negative effect of pregnancy in half
The results indicate that exposure to air pollution in early pregnancy has a negative effect towards the middle of it. However, Dra. Inma Aguilera, who coordinated the study and researcher at the CREAL, says "we can not say that pollution affects more than one period. We have only found an effect in a given period, half of pregnancy". He adds that the impact on public health could be relevant, since "on one hand the air pollution affects the whole population and, secondly, because the growth of the fetus is an important indicator of perinatal health".


Note: The 562 women who participated in this research project are part of the INMA, and living in Sabadell, in the province of Barcelona, and the analysis used data from three prenatal ultrasound.