Acetaminophen Toxicity: How Genetic Susceptibility Combines with Environmental Factors Vaccines do not cause autism. Neither does acetaminophen (Tylenol) use in pregnancy. Decades of rigorous research and systematic reviews have shown no credible link. Continuing to promote these myths is not only Evidence That Acetaminophen Triggers Autism in Susceptible Individuals Has Been Ignored and Mishandled for More than a Decade[v1] Preprints.org Is Tylenol Safe During Pregnancy? Understanding Risk Factors Seeking Health Autism and Tylenol: Exploring the Evidence on Acetaminophen in Pregnancy NAM 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