Tylenol, autism and the difference between finding a link and finding a cause in scientific research No link between acetaminophen use during pregnancy and children's autism risk 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 Acetaminophen Toxicity: How Genetic Susceptibility Combines with Environmental Factors