Abstract
Autism is a developmental disability characterized by impairment in social interaction, abnormalities in speech, and stereotyped pattern of behaviors with onset in childhood (under 3 years old). Due to the surge in the number of children diagnosed with autism in recent decades, a wide range of studies have been done to identify the etiological risk factors of autism. It has been found that genetic and environmental factors are both involved in autism pathogenesis. In this study, a set of risk factors involved in the occurrence of autism has been collected, and some recommendations are represented to reduce the risk of this disease in children.