The University of Rochester Medical Center-led study is published in the International Journal of Andrology.

Because testosterone produces the masculine brain, researchers are concerned that fetal exposure to anti-androgens such as phthalates — which are pervasive in the environment — has the potential to alter masculine brain development, said lead author Shanna H. Swan, Ph.D., professor of Obstetrics and Gynecology, director of the URMC Center for Reproductive Epidemiology, and an expert in phthalates.

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