A study from Denmark published this week followed a group of pregnant women expecting female babies, and who took Tylenol (or its generic form) during pregnancy.
Early prenatal exposure was associated with “reduced ovarian … and uterine volume” while “mid-late … exposure was associated with fewer ovarian follicles.”
Some of these results were seen both in infancy and in adolescence.
Similar results were seen in animal studies prior to this groundbreaking study on humans.
Researchers point out that longer follow-up and larger studies are needed to arrive at any conclusions as to the impacts of prenatal Tylenol exposure on future female fertility.