What the research says about autism and acetaminophen use during pregnancy Yale School of Public Health Acetaminophen's Role in Autism and ADHD: A Mitochondrial Perspective Acetaminophen Toxicity: How Genetic Susceptibility Combines with Environmental Factors Tylenol can lower the body's key antioxidant, glutathione, though this isn't seen on routine labs. But mechanistic data clinical proof, so we still need good trials. The Tylenolautism link isn't clear. 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,