Studies show that people with ADHD and Autism have about 20 40% less Glutathione than their peers. in the treatment of autism symptoms helps to reduce oxidative stress and inflammation leading to ADHD drugs increase brain glutamate, predict positive emotion in healthy people Brown University ADHD: Symptoms, Causes and Natural Support Strategies 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. Glutathione: Master Antioxidant, Reducing Oxidative Stress, and Detoxification