In August, Bauer and her colleagues published an analysis of 46 previous studies on Tylenol, autism, and attention-deficit/hyperactivity disorder. “If you’re pregnant, don’t take Tylenol, and don’t give it to the baby after the baby is born,” Trump said. Further, research has not deeply examined Tylenol risks in young children, and many rigorous studies refute a link between vaccines and autism. In addition, both Trump and Kennedy have repeated the scientifically debunked notion that childhood vaccines may cause autism. Helen Tager-Flusberg, director of the Center for Autism Research Excellence at Boston University, called Trump’s comments dangerous.