This study found an association between increased acetaminophen use in the second and third trimester and smaller vocabulary size and less complex utterances (phrases) used at two years of age. Language skills of 3-year olds whose parents had taken more acetaminophen were also lower than those who weren’t exposed to as much acetaminophen in utero. This study about acetaminophen and language delays in toddlers isn’t the first to look at this or find an association. BUT, it looked at language skills in a more detailed way with different tests than some past studies and asked parents more often about their medication use, which could mean more accurate information. Association does NOT mean causation. Association doesn’t mean the acetaminophen CAUSED the lower language scores. The authors say it could be the condition for which the parent needed to take the medication, like pain associated with inflammation, infection, or something else. They also didn’t look at the dosage taken each time. Also, note that the group of parents and children studied were relatively white, non-Hispanic, well-educated with a high annual household income, so this means we can’t apply the data to the general population. The authors recommend further studies to look at all factors in detail so parents can make informed decisions. This is *not* medical advice; make all decisions related to medication and pregnancy with your healthcare provider. Woodbury, M.L., Cintora, P., Ng, S. et al. Examining the relationship of acetaminophen use during pregnancy with early language development in children. Pediatr Res (2023). https://doi.org/10.1038/s41390-023-02924-4 #tylenol #pregnancy #acetominophen #newmom #newparents #languagedelay #developmentaldelay #earlyintervention #speechtherapy #research #slp