Children who when his mother during pregnancy are at risk of exposure to air pollution is twice as likely to have autism than pregnant women who live in a clean air environment.
Fine particles released from burning, vehicle and factory smoke is harmful substances are strongly associated with autism. Thus the conclusion of research by a team from the Harvard School of Public Health.
Preliminary research also found a link between pollution and autism. Including a study in 2010 which states that the risk of infants with autism has doubled if the current three-trimester pregnant mothers living near the highway air pollution.
In a study by a team of Harvard, found additional evidence of the link between pollution and autism. The US government discovered autism in the country increased rapidly became one of 68 children of a previous one of 150 children in 2000.
Experts believe the increase in the number of public awareness will describe the growth and development of this disorder.
Although the disorder is related to the genetic improvement of this incident makes experts interested to investigate whether environmental factors play a role.
Harvard study team involving children of 116 430 women in the Nurses' Health Study II, which began in 2989. The researchers collected data where the women lived during pregnancy and the level of pollution. Then compared with the birth history of 245 children with autism and 1,522 children whose growth of normal. All children born between the years 1990-2002.
It turns out that there is no link between autism and the fine particle pollutants before or early gestational age, or after the baby is born. However, exposure to high pollution during pregnancy trimester of three increases the risk of autism doubled.
Unclear how the fine particles that trigger autism, but this pollutant particles enveloped in a lot of contaminants and can enter into the cells thereby disrupting the baby's brain development.