For some time, serotonin and vitamin D have been proposed to play a role in autism, but until recently no causal mechanism has ever been established. Autism researchers Dr. Bruce Ames and Dr. Rhonda Patrick of Children's Hospital Oakland Research Institute (CHORI) join host Paul Rokuskie to discuss their study on the demonstrated impact of Vitamin D on social behavior associated with Autism Spectrum Disorder (ASD). Their research implicates vitamin D as an activator of serotonin, oxytocin, and vasopressin, three brain hormones that affect social behavior related to autism.