What health issue is Kennedy linking to Tylenol use during pregnancy?

Kennedy is linking Tylenol use during pregnancy to autism, as research has suggested a potential connection between the use of acetaminophen (the active ingredient in Tylenol) during pregnancy and an increased risk of autism spectrum disorders in children. Studies have indicated that prenatal exposure to acetaminophen may interfere with normal brain development, which could predispose children to autism.

This connection stems from the complex interactions that medications have with fetal brain development. While not all studies concur on the findings, the hypothesis is that acetaminophen may impact neurodevelopment, leading to potential behavioral and cognitive outcomes associated with autism.

The other options may be relevant health issues, but the specific focus of Kennedy's concerns is on autism in relation to Tylenol use during pregnancy.