Maternal Exposure to Fine Particulate Matter and Its Chemical Components Increasing the Occurrence of Gestational Diabetes Mellitus in Pregnant Japanese Women

Introduction: mass and its components, particularly over the first trimester (early placentation period), and GDM. Methods: and its components over the 3 months before pregnancy and the first (0-13 gestational weeks) and second (14-27 gestational weeks) trimesters were calculated and assigned to each woman. We estimated the odds ratios (ORs) of GDM in a multilevel logistic regression model. Results: ) increase = 1.10; 1.00-1.21). Conclusions: and one of its components, organic carbon, over the first trimester increases GDM occurrence in Japan.