Ramkumar Menon, PhD, assistant professor of Obstetrics and Gynecology, has found that higher concentrations of Bisphenol A, or BPA, the common plastics chemical and environmental pollutant, in a pregnant woman’s blood may be a contributing factor in preterm births. The UTMB study found that pregnant women with higher levels of BPA in their blood are more likely to deliver their babies early compared to women with lower levels of BPA.