Autism spectrum disorder (ASD) is a developmental disability that ranges in severity, but creates significant social, communication, and behavioral challenges. The prevalence of ASD has increased in recent years, with 1 out of 68 children diagnosed with the disorder. The cause of ASD has yet to be determined; however, certain environmental and prenatal exposures and genetic risk factors have been identified. Recent research suggests a neurotransmitter imbalance may result in ASD onset. A meta-analysis was conducted investigating the hypothesis that imbalances in brain neurotransmitters are associated with ASD. Results will be discussed. Considering the large proportion of children affected by ASD, exploring etiology and identifying significant risk factors is critical to understanding the disease development.
