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, 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. Sex differences in glutathione metabolism and acetaminophen toxicity 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