Dr. Larry Gray, associate professor of pediatrics in the division of developmental and behavioral pediatrics at Northwestern University Feinberg School of Medicine and a physician at Ann & Robert H. Lurie Children’s Hospital of Chicago, joins John Williams to talk about the Trump administration linking autism to Tylenol use during pregnancy. Dr. Gray talks about the rates of autism being extraordinarily high, how we determine if someone is autistic, what are the factors that cause autism, what he knows about autism rates and the Amish community, and if taking Tylenol during pregnancy increases the risk of autism.