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Common pain reliever use during pregnancy linked to language delay in girls
https://www.sciencedaily.com/releases/2018/01/180110080556.htm

Acetaminophen, also known as PARACETAMOL.

Language delay was seen in 10 percent of all the children in the study, with greater delays in boys than girls overall. However, girls born to mothers with higher exposure -- those who took acetaminophen more than six times in early pregnancy -- were nearly six times more likely to have language delay than girls born to mothers who did not take acetaminophen. These results are consistent with studies reporting decreased IQ and increased communication problems in children born to mothers who used more acetaminophen during pregnancy.

Overall, the results suggest that acetaminophen use in pregnancy results in a loss of the well-recognized female advantage in language development in early childhood.