Pediatric doctor discusses 20 year awareness of Tylenol's role in autism risk factors 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, Understanding the Impact of Acetaminophen: Tylenol and Glutathione in Autism What we know about rising autism rates and Trump's unproven Tylenol link 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