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   What causes autism spectrum disorder?

   • Autism spectrum disorder has no single known cause. Given the complexity of the disorder, and the fact that symptoms and severity vary, there are probably many causes. Both genetics and environment may play a role. Genetics. Several different genes appear to be involved in autism spectrum disorder.

   Autism spectrum disorder - Symptoms and causes - Mayo Clinic

   www.mayoclinic.org/diseases-conditions/autism-spectrum-disorder/symptoms-causes/syc-20352928

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   Is there a single cause for autism?

   • Because the disorder is so complex and no two people with autism are exactly alike, there are probably many causes for autism. It is also likely that there is not a single cause for autism, but rather that it results from a combination of causes. Scientists are studying some of the following as possible causes of or contributors to ASD.

   What causes autism? | NICHD - NICHD - Eunice Kennedy Shriver National

   www.nichd.nih.gov/health/topics/autism/conditioninfo/causes

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   Why do people have autism?

   • People are more likely to have autism if they have related genetic disorders, such as fragile X syndrome, Rett syndrome, and tuberous sclerosis. Autism is also more likely due to a number of environmental factors, such as maternal infection, diabetes, high blood pressure, and older paternal age at conception.

   What Causes Autism? | Psychology Today

   www.psychologytoday.com/us/basics/autism/what-causes-autism

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2. www.mayoclinic.org › diseases-conditions › autismAutism spectrum disorder - Symptoms and causes - Mayo Clinic

   www.mayoclinic.org › diseases-conditions › autism

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   Jan 6, 2018 · Causes. Autism spectrum disorder has no single known cause. Given the complexity of the disorder, and the fact that symptoms and severity vary, there are probably many causes. Both genetics and environment may play a role. Genetics. Several different genes appear to be involved in autism spectrum disorder.

3. psychcentral.com › autism › what-causes-autismWhat Causes Autism Spectrum Disorder? - Psych Central

   psychcentral.com › autism › what-causes-autism

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   Mar 31, 2021 · Many experts believe genes play the biggest role in causing autism. A 2019 study estimated that about 80% of autistic people have it due to genetics. Research has found more than 800 genes linked...

4. www.cdc.gov › autism › signs-symptomsSigns and Symptoms of Autism Spectrum Disorder | Autism ...

   www.cdc.gov › autism › signs-symptoms

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   Jan 25, 2024 · Autism spectrum disorder (ASD) is a developmental disability caused by differences in the brain. People with ASD often have problems with social communication and interaction, and restricted or repetitive behaviors or interests.

5. www.nichd.nih.gov › autism › conditioninfoWhat causes autism? - Eunice Kennedy Shriver National ...

   www.nichd.nih.gov › autism › conditioninfo

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   Because the disorder is so complex and no two people with autism are exactly alike, there are probably many causes for autism. It is also likely that there is not a single cause for autism, but rather that it results from a combination of causes.

6. www.autismspeaks.org › what-causes-autismWhat causes autism? | Autism Speaks

   www.autismspeaks.org › what-causes-autism

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   There are many causes of autism. Research suggests that autism spectrum disorder (ASD) develops from a combination of: Genetic influences and; Environmental influences, including social determinants; These factors appear to increase the risk of autism and shape the type of autism that a child will develop.

7. www.psychologytoday.com › what-causes-autismWhat Causes Autism? | Psychology Today

   www.psychologytoday.com › what-causes-autism

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   Several environmental factors increase the risk of autism, and they center around experiences in the pregnancy or infancy that may influence brain development. Premature birth and low birth...

8. www.cdc.gov › autism › aboutAbout Autism Spectrum Disorder | Autism Spectrum Disorder ...

   www.cdc.gov › autism › about

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   May 14, 2024 · Key points. Autism spectrum disorder (ASD) is a developmental disability caused by differences in the brain. Some people with ASD have a known difference, such as a genetic condition. Other causes are not yet known. Scientists believe there are multiple causes of ASD that act together to change the most common ways people develop.