What the research says about autism and acetaminophen use during pregnancy Yale School of Public Health Acetaminophen Use During Pregnancy and Autism Risk 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 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.