The question “what can cause autism” reflects understandable curiosity about a condition affecting 1 in 36 children. Autism has multiple contributing factors, and understanding them helps families make informed decisions.

Established Risk Factors

• Genetics: The strongest factor, accounting for 60-90% of risk. Hundreds of genes are implicated.
• Family history: Having a sibling with autism increases risk to 10-20%.
• Parental age: Advanced age of either parent at conception is associated with higher risk.
• Prenatal factors: Certain medications, pregnancy complications, and very short birth intervals.

What Does Not Cause Autism

Despite persistent myths, vaccines, parenting style, television, sugar, and food dyes do not cause autism. These have been extensively studied and ruled out.

The Interplay of Factors

Autism likely results from complex interactions between genetic predisposition and environmental influences during critical windows of brain development. No single factor is sufficient on its own.

Focus Forward

Whatever the contributing factors, early evidence-based intervention matters most. ABA therapy helps children develop essential skills. Contact Treetop ABA Therapy to get started.