Autism Causes What Causes Autism? Share Pin Email Updated April 20, 2016 The cause of autism cannot be detailed exactly. There are large number of causes such as genetics or environment. Understand more about the causes of autism in this video. Up Next Up Next Video Are We Close to Understanding the Causes of Autism? Up Next Video What You Need to Know About Autism Up Next Video Understanding Autism Up Next Video Can Autism Run in Families?