When expectant mothers are exposed to plastics chemicals called phthalates during the first trimester, their male offspring may have a greater risk of infertility later in life, a new study suggests.
The study, which included more than 700 infants in four U.S. cities, is the largest of its kind to date. It confirms earlier findings in humans and animals that exposure to certain types of chemicals called phthalates may lead to changes in the way the male reproductive tract develops, said Dr. Russ Hauser, an epidemiologist at the Harvard School of Public Health, who was not involved in the new study.
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