What Causes Autism?

The bottom line is, no one knows for sure what causes autism. Most experts will say that autism is probably caused by a combination of genetic and environmental factors. Even those experts, though, do not have a definite answer. For many people, this uncertainty is terribly frustrating. On the plus side, interest in and funding for autism research is on the rise, so new and better information should be forthcoming in the next months and years.The question of what causes autism is highly controversial. Many people are passionate about the issue, and hold strong beliefs. Books, articles and TV programs have raised awareness -- and heated up the argument. This article provides an overview of different theories, all of which have strong supporters.Two theories link autism and vaccines. The first theory suggests that the MMR (Mumps-Measles-Rubella) vaccine may cause intestinal problems leading to the development of autism. The second theory suggests that a mercury-based preservative called thimerosal, used in some vaccines, could be connected to autism. To find out more, read Do Vaccines Cause Autism? and Is Autism on the Rise?.It is likely that autism has a genetic basis of some sort. Many studies have shown that parents from families with autistic members are more likely to have autistic children. It is also the case that many families with one autistic child are at increased risk of having more than one autistic child. To find out more about autism and genetics, read Is Autism Genetic?Is Autism Caused by Bad Parenting?:No. Dr. Kanner, the man who first identified autism as a unique condition, had the idea that cold “refrigerator” mothers caused autism. He was wrong. Dr. Kanner's misinterpretation of autism created a generation of parents carrying the guilt for their child's disability. Fortunately, our generation is spared that burden.Is Autism Caused By Atypical Brain Development?:Some researchers have found differences between the autistic brain and the typical brain. Autistic individuals seem to have larger brains. They also seem to process information differently; in other words, their brains are "wired" differently. Research on this issue is ongoing at The University of Pittsburgh. Is Autism an Immune Deficiency Problem?:There is some evidence that autism is linked to problems in the immune system. Autistic individuals often have other physical issues related to immune deficiency. Some researchers say they have developed effective treatments based on boosting the immune system. The NIH, however, states that the evidence is not yet strong enough to show a causal relationship.Is Autism Caused By Food Allergies?:Is Autism Caused By Poor Nutrition?:It seems unlikely that malnutrition can cause autism. But megavitamin therapies have been used for many years to treat autistic symptoms. Dr. Bernard Rimland, of the Autism Institute, has been a leader in this area.More About Possible Causes of Autismif(zSbL

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