A previously rare disorder, autism has become an epidemic in our children, currently with an estimated 1 in 150 children affected. Autistic disorder is characterized by impairments in social interaction, abnormal communication and language development, and restricted, repetitive and stereotyped patterns of behavior, interests and activities Theories as to causes of autism, and research exploring risk factors, genetics, and therapies continue to uncover the truly complex interplay of factors. Abnormal development of the brain, immune system dysfunction with autoimmune characteristics, digestive disorders, detoxification impairment, environmental factors (vaccines, heavy metals, chemicals, viruses), and genetic susceptibility combine to produce the variable manifestations of autism spectrum disorder.