What The Study Did: Researchers used urinary measures of biomarkers of phthalates (a group of chemicals used in plastics) and phthalate substitutes from couples undergoing fertility care and examined if higher concentrations prior to conception were associated with an increased risk of preterm birth.
Authors: Carmen Messerlian, Ph.D., of the Harvard T.H. Chan School of Public Health in Boston, is the corresponding author.
To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/
Editor's Note: The article includes conflict of interest and funding/support disclosures. Please see the article for additional information, including other authors, author contributions and affiliations, conflicts of interest and financial disclosures, and funding and support.