Is Tylenol Safe During Pregnancy? Understanding Risk Factors Seeking Health 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 Evidence that acetaminophen triggers autism in susceptible individuals has been ignored and mishandled for more than a decade. PDF] Evidence that Increased Acetaminophen use in Genetically Vulnerable Children Appears to be a Major Cause of the Epidemics of Autism, Attention Deficit with Hyperactivity, and Asthma Semantic Scholar