79. Tylenol, Leucovorin, Glutathione, & Autism Autism Dietitian 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, No Clear Autism Link With Prenatal Tylenol, Major Review Finds MedPage Today Researchers are studying a possible link between acetaminophen (Tylenol) use during pregnancy and higher autism or ADHD risk. It may lower glutathione, an important antioxidant for brain development. Why you should avoid REGULAR acetaminophen use for babies and pregnancy 3 Little Plums