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. Tylenol, Autism, And The Glutathione Connection OC Integrative Medicine 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 I'm not suggesting that there's a definitive link between Tylenol and autism, but it 100% depletes your body of glutathione, and enough studies have shown that it should only be taken when