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3. Is autism becoming more common?

Yes. More children are being identified with autism worldwide. As of 2025, about 1 in 31 (3.2%) children aged 8 years have been identified with autism according to estimates from the Centers for Disease Control and Prevention (CDC)’s Autism and Developmental Disabilities Monitoring (ADDM) Network. This is likely due to greater awareness, improved diagnostic practices and broader diagnostic criteria, rather than a single environmental cause.