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J Res Med Sci. 2017 Feb 16;22:27. doi: 10.4103/1735-1995.200272. eCollection 2017.

Environmental factors influencing the risk of autism.

Author information

1
Division of Genetics, Department of Biology, Faculty of Science, Tarbiat Modares University, Tehran, Iran.
2
Division of Genetics, Department of Biology, Faculty of Science, Isfahan University, Isfahan, Iran.
3
Cellular and Molecular Research Center, Shahrekord University of Medical Sciences, Shahrekord, Iran.
4
Genetic and Identification Lab, Legal Medicine Center, Isfahan, Iran.
5
Department of Psychiatry, School of Medicine, Isfahan University of Medical Sciences, Noor Hospital, Isfahan, Iran.

Abstract

Autism is a developmental disability with age of onset in childhood (under 3 years old), which is characterized by definite impairments in social interactions, abnormalities in speech, and stereotyped pattern of behaviors. Due to the progress of autism in recent decades, a wide range of studies have been done to identify the etiological factors of autism. It has been found that genetic and environmental factors are both involved in autism pathogenesis. Hence, in this review article, a set of environmental factors involved in the occurrence of autism has been collected, and finally, some practical recommendations for reduction of the risk of this devastating disease in children are represented.

KEYWORDS:

Autism; environmental factors; etiological factors

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