Know the Impact of Mist Smog for Pregnant Women

Know the Impact of Mist Smog for Pregnant WomenLiputan6.com, Jakarta Smoke haze may pose a risk of miscarriage early in pregnancy, says a study.

"We found that both ozone and particles in the air are associated with an increased risk of early pregnancy loss," said senior researcher Pauline Mendola, an investigator at the UWS National Institute of Children's Health and Human Development, quoted by Webmd on Wednesday (22/11/2017).

Mendola and his team reviewed data from a long-term study from the U.S. National Institute of Health which was followed by 501 couples between 2005 and 2009.

There were 343 couples who reached 9 months of pregnancy, but 98 (28 percent) miscarried in the first 18 weeks, the researchers said.

The team estimates the couple's exposure to smoke haze based on pollution levels detected around their housing, and then see if poor air may affect pregnancy.

The findings show, ozone exposure appears to increase the risk of pregnancy loss by 12 percent, and exposure to fine air particles increased by 13 percent. That's even after the researchers compensate for other factors that may affect the health of pregnancy, such as age, race, education, economy, weight, fertility, and consumption of caffeine and multivitamins.

The researchers estimated that nine out of 98 pregnancies lost could be saved if pregnant women were exposed to lower or no smog levels at all.

No one knows for sure why exposure to smoke is associated with a loss of pregnancy, Mendola said. And the study does not prove that smoke exposure causes a miscarriage, it's just a relationship.

The inflammation and oxidative stress caused by air pollution can endanger pregnancy in various ways, Mendola said. This may compromise the development of the fetus, impair the implantation of the fertilized egg in the womb, or cause problems for placental development.

"We do not know because we can not measure it with this data," explained Mendola. "All we can say is we're looking at the relationship between exposure to air pollution in pregnancy and the risk of loss."

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