Causes of autism spectrum disorder (ASD)

Learn about the causes of autism spectrum disorder (ASD).

What are the risk factors of ASD?

The causes of ASD are still unknown.

There is a lot of research being done worldwide to find what causes ASD. Some influencing factors may include:

  • genetics and inherited traits
  • brain growth before and after birth
  • exposure to things in the environment
  • the body's systems to fight things that make people sick, like viruses and bacteria

ASD is not:

  • contagious
  • caused by vaccination
  • caused by parenting style

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