Tylenol (acetaminophen) does not cause autism. The FDA, in its statement that there may be an association, confirmed that "a causal relationship has not been established, and studies of millions of children HHS responds to report about autism and acetaminophen : Shots Health News : NPR Kennedy to link Tylenol use in pregnancy to autism, report says Reuters Tylenol, Autism, and Leucovorin: What Parents Need to Know. This afternoon, The Wall Street Journal reported that HHS Secretary Robert F. Kennedy, Jr. will announce later this month that Tylenol has been identified as a cause of autism, and that a