The causes of Autism are controversial, but genes play a big role. Environment also plays a small role.For more videos, visit the Everyday Health Channel on YouTube:http://www.youtube.com/user/EverydayHealth/Check us out:http://www.everydayhealth.com/Find us on Facebook:http://www.facebook.com/everydayhealthFollow us on Twitter at:https://twitter.com/everydayhealthWe're on Pinterest:http://pinterest.com/everydayhealth/
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