Exhaust gases, caused by the premature birth, especially the poly aromatic hydrocarbons (PAH) reported calls for a 30 percent possibility of baby prematurely increments.

Carrying out his research at the University of California scientists with Beate Ritz, air pollution and premature birth is the relationship between low birth weight, which items they already, that they found the baby early spawns.

According to research published in the magazine results in Environmental Health, air pollution caused by exhaust gases effect on premature birth, particularly PAH. High risk pregnant women exposed to PAH making premature birth is increasing by 30 percent. The likelihood of Benzol and diesel by 10 percent on early institution.

Pregnant women, especially the recently exposed carbon monoxide and nitrogen oxides are effective on a premature birth.

Ammonium nitrate also raises the risk of premature birth 21 percent.