Is Exposure to Wildfire Smoke a Potential Environmental Risk Factor for Autism? 

Recent studies suggest that wildfire smoke and autism may be linked, with exposure to smoke from wildfires potentially increasing the risk of autism spectrum disorders (ASD). Wildfire smoke and autism have become a growing concern, especially in regions prone to frequent wildfires, as smoke inhalation during critical developmental periods can negatively impact brain development and contribute to neurodevelopmental disorders like autism. 

Wildfire smoke and autism are connected through the harmful effects of fine particulate matter (PM2.5) and other toxic chemicals found in wildfire smoke. These pollutants can interfere with brain function, causing neurodevelopmental effects that may lead to cognitive delays, behavioural challenges, and autism-related symptoms. 

How Does Wildfire Smoke Affect Autism Risk? 

Understanding the connection between wildfire smoke and autism is crucial for managing environmental risks. Here’s how smoke inhalation can influence brain development: 

Prenatal Exposure:  

Exposure to wildfire smoke during pregnancy can disrupt neurodevelopmental effects, leading to an increased risk of autism in children. The fine particles and toxic chemicals in the smoke can cause inflammation in the brain, interfering with normal brain development during critical stages. 

Postnatal Exposure:  

Children exposed to wildfire smoke after birth may experience developmental delays, including communication difficulties and social interaction challenges. Prolonged exposure to smoke inhalation can exacerbate these issues, increasing the severity of autism symptoms over time. 

Visit providers like Autism Detect for personal consultations to understand how wildfire smoke and autism may impact your child’s development and explore strategies to reduce exposure to harmful pollutants. 

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to Exposure to Toxins or Pollutants. 

Hannah Smith, MSc

Author

Hannah Smith is a clinical psychologist with a Master’s in Clinical Psychology and over three years of experience in behaviour therapy, special education, and inclusive practices. She specialises in Applied Behavior Analysis (ABA), Cognitive Behavioural Therapy (CBT), and inclusive education strategies. Hannah has worked extensively with children and adults with Autism Spectrum Disorder (ASD), ADHD, Down syndrome, and intellectual disabilities, delivering evidence-based interventions to support development, mental health, and well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the author's privacy. 

Dr. Rebecca Fernandez, MBBS

Reviewer

Dr. Rebecca Fernandez is a UK-trained physician with an MBBS and experience in general surgery, cardiology, internal medicine, gynecology, intensive care, and emergency medicine. She has managed critically ill patients, stabilised acute trauma cases, and provided comprehensive inpatient and outpatient care. In psychiatry, Dr. Fernandez has worked with psychotic, mood, anxiety, and substance use disorders, applying evidence-based approaches such as CBT, ACT, and mindfulness-based therapies. Her skills span patient assessment, treatment planning, and the integration of digital health solutions to support mental well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the reviewer's privacy.