Air POLLUTION not only trigger the emergence of various respiratory diseases. Of polluted air were also influences the level of intelligence or intelligence quotient (IQ) person.

A study Columbia Center for Children's Environmental Health found that air pollution is closely related to a child's IQ.

In the study revealed that many pregnant women who breathe dirty air gave birth to a child at risk with a low IQ. Research conducted with 249 respondents during pregnancy child his mother lived in New York City. In the final months of her pregnancy, pregnant women were wearing a bag of air quality monitors.

They each day filthy air for vehicle and equipment exhaust gas emissions. After the children are 5 years old and started school, they were asked to take an IQ test.

Apparently, children who become pregnant mother's exposure to pollution at most have an IQ score 4-5 points lower than children exposed to less pollution.

Chairman of the research team said Frederica Perera, the difference in the level of their intelligence in school so visible. Dr. Michael Msaal, pediatrician from the University of Chicago, who was not involved in the research said that, although powerful, does not mean that pollution affected child can not read or write. It's just that he reminded them who live in areas with high air pollution health risk is greater.

Patrick Breysse, environmental health specialists from the Johns Hopkins School of Public Health, said it needed further study to infer the relationship of air pollution and IQ level.

However, he argues, air pollution has adverse effects on fetal brain development. Patrick also added that, in addition to air pollution factors, other factors also need to be considered, low economic conditions, for example. Both factors may be able to answer why these children have a lower intelligence level.