Even Small Amounts of Pollution Can Lead to Long Term Health Effects for Developing Fetuses: Johns Hopkins Study

Intrauterine Inflammation and Maternal Exposure to Ambient PM2.5 during Preconception and Specific Periods of Pregnancy: The Boston Birth Cohort
Environmental Health Perspectives (2016; DOI:10.1289/EHP243 / by Rebecca Massa Nachman, et al.
http://ehp.niehs.nih.gov/ehp243/

[From Press Release]  Even small amounts of air pollution appear to raise the risk of a condition in pregnant women linked to premature births and lifelong neurological and respiratory disorders in their children, new Johns Hopkins Bloomberg School of Public Health research suggests.

Fine particles from car exhaust, power plants and other industrial sources are breathed into the lungs, but the scientists have now found evidence of the effects of that pollution in pregnant women’s placentas, the organ that connects a mother to her fetus and provides blood, oxygen and nutrition. They found that the greater the maternal exposure to air pollution, the more likely the pregnant women suffered from a condition called intrauterine inflammation, which can increase the risk of a number of health problems for her child from the fetal stage well into childhood…

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