Autism spectrum disorder is a complex neurodevelopmental condition with no single cause. Research reveals it results from a combination of genetic and environmental factors influencing brain development.

Genetics Play the Largest Role

Twin studies show genetics account for 60-90% of autism risk. Over 100 genes have been strongly linked to autism. The condition can arise from inherited variations and new mutations.

Environmental Factors

• Advanced parental age at conception
• Certain prenatal exposures, including some medications like valproic acid
• Complications during pregnancy or birth
• Very short intervals between pregnancies

Brain Development Differences

Autistic brains often show altered patterns of neural connectivity. There may be differences in growth patterns during early childhood, and the pruning process that streamlines neural connections may proceed differently.

What Does Not Cause Autism

Vaccines, parenting styles, diet, and screen time have not been shown to cause autism. These myths persist but lack scientific evidence.

Focus on Support

ABA therapy offers proven methods for helping autistic individuals develop essential skills. Reach out to Treetop ABA Therapy to learn more.