What Are the Three Main Causes of Autism?

Autism doesn’t have a single cause, but research points to three main contributing factors:

  1. Genetics – Studies show that autism often runs in families. Certain genetic variations can affect brain development, increasing the likelihood of autism.

  2. Prenatal and Early Development Factors – Events during pregnancy, such as advanced parental age, complications during birth, or exposure to certain medications, may influence a child’s risk of developing autism.

  3. Environmental Influences – While less understood, factors like toxins, infections, or extreme stress during pregnancy may also play a role in how autism develops.


It’s important to remember that autism is not caused by parenting style or vaccines—this is a common myth. Instead, it’s a complex combination of genetic and environmental factors that affects brain development.


At Connect n Care ABA, we focus on what truly matters, supporting your child with evidence-based therapy that helps them thrive, no matter the cause.


Want to learn how ABA therapy can support your child’s growth? Contact us today and let’s create a personalized ABA therapy plan in North Carolina that meets your family’s needs.


SOURCES:


https://www.cdc.gov/autism/about/index.html


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


https://www.autismspeaks.org/what-causes-autism


https://my.clevelandclinic.org/health/articles/autism


https://www.medicalnewstoday.com/articles/what-causes-autism

Fayge Orzel • July 23, 2025
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