Certain environmental chemicals were tied to postpartum depression in new moms, researchers said. A prospective study of 139 pregnant women found that those with greater prenatal exposure to certain endocrine-disrupting chemicals commonly found in plastics had a higher risk of developing postpartum depression 4 months after birth, reported Melanie Jacobson, PhD, MPH, of NYU Langone Medical Center in New York City, and colleagues. Specifically, odds of developing postpartum depression were substantially increased (OR 1.48, 95% CI 1.04-2.11) with exposure to di-n-octyl phthalate (DnOP), used to make plastics more malleable and commonly found in medical tubing and food packaging. This relationship was seemingly driven by a reduction in progesterone concentrations, the team wrote in the