Prenatal and perinatal analgesic exposure and autism: an ecological link Environmental Health Springer Nature Link 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 The headline Tylenol causes autism has sparked concern. But the science tells a more nuanced story. Some observational studies have found that when pregnant women used more acetaminophen, their Mark Hyman, Pediatric doctor discusses 20 year awareness of Tylenol's role in autism risk factors