Despite several studies, the cause of autism in children is still unknown.Heredity, cited around 90 percent of the time, and childhood immunizations, were believed to be the causes of autism.  Despite several clinical studies, no scientific evidence associating Immunization and autism was shown.

Several studies associating autism with antidepressant drugs was mentioned by Anne Harding  in the article published recently in the Cable News Network website.  It stated that children whose mothers are under antidepressant medication like Zoloft while pregnant are twice as likely as other children to be diagnosed with autism or other related disorder. In other current news reports, another Pfizer antidepressant drug has been blamedfor causing the death of an infant.

Zoloft belongs to a class of antidepressants which is the selective serotonin reuptake inhibitors which is considered as risky during pregnancy.  According to a study published in the Archives of General Psychiatry that children who were exposed to the drugs during the first trimester were nearly four times likely to develop an autism spectrum disorder (ASD) than with unexposed children, Hardings say.