Women who were highly exposed to ultra-fine particles in air pollution during their pregnancy were more likely to have children who developed asthma, according to a study. The study was published in the American Journal of Respiratory and Critical Care Medicine in May. This is the first time asthma has been linked with prenatal exposure to this type of air pollution, which is named for its tiny size and which is not regulated or routinely monitored in the United States. Slightly more than 18 per cent of the children born to these mothers developed asthma in their preschool years, compared to 7 per cent of children overall in the United States identified as having asthma by the Centers for Disease Control and Prevention. Other types of pollutants are routinely monitored and regulated to reduce potential health effects, such as larger-size particulate pollution and gaseous pollutants such as nitrogen dioxide. These have been associated with asthma risk in children in prior research. This study included 376 mothers and their children. Many of these women were more likely to live near major roadways with higher traffic density where exposure to these tiny particles tends to be higher. Most of the diagnoses of asthma occurred just after three years of age. Pollution’s effect in utero can alter lung development and respiratory health. This can lead to pediatric disorders like asthma. While both boys and girls were affected by prenatal ultrafine particle exposure, this study found that girl babies were more sensitive to ultra-fine particle pollution’s effects on asthma risk when exposed in late pregnancy.
May 23, 2021, 02:00PM ISTSource: ANI