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 The Evidence on Tylenol and Autism Johns Hopkins Bloomberg School of Public Health Acetaminophen (Tylenol) Use in Pregnancy: Autism Concerns 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,