Pregnant women should leave the city, because in the big cities unsafe. Scientists from the University of California established: living in a big city, a woman increases by one third the risk of premature birth due to the influence of environmental pollution.
Analyzing the statistics of births and comparing it to the measurements of pollutants, they established that the biggest harm is caused by exhaust gases, more specifically, chemical compounds, polycyclic aromatic hydrocarbons (a byproduct of gasoline). Because their risk is increased by 30%. Emissions from industrial sites often contain ammonium nitrate, which increases the risk by 21%, benzene and diesel vapors by 10%.
The researchers found that the higher the concentration of the contaminant reaches in winter and summer. If the city is located near the sea or ocean, the situation is somewhat more favorable.
"Air pollution can lead to the baby being born with low birth-weight or premature. It was already known. We found out what the emissions affect the risk of premature birth," - says the head of research Dr. Beate Ritz.
Source:
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