Can Polychlorinated Biphenyl Exposures from Factories Be Associated with Autism? 

Recent research suggests that PCB exposure and autism may be linked, with children living near factories or industrial sites where polychlorinated biphenyls (PCBs) are used or released at higher risk of developing autism spectrum disorders (ASD). PCB exposure has long been associated with developmental and neurological issues, and studies have shown that exposure to these persistent organic pollutants during pregnancy or early childhood may contribute to autism. 

PCB exposure and autism are a significant concern in communities near industrial sites where industrial contamination is a common issue. The neurotoxic effects of PCBs can disrupt brain development, especially in early childhood, leading to delays in cognitive abilities and behavioural challenges commonly seen in children with autism. 

The Impact of PCB Exposure on Autism Risk 

Understanding the relationship between PCB exposure and autism is crucial in addressing environmental factors that may increase the risk of developmental disorders. Here’s how persistent organic pollutants like PCBs can affect a child’s development: 

Prenatal Exposure:  

Exposure to PCB during pregnancy can interfere with foetal brain development. PCB exposure and autism are linked through the harmful effects of these pollutants, which can disrupt normal neurodevelopment, leading to cognitive and behavioural delays after birth. 

Postnatal Impact:  

Children exposed to industrial contamination through air, water, or food may experience developmental difficulties, including problems with communication, social interaction, and behaviour. Early intervention can help manage symptoms, but the risks of PCB exposure on autism development should not be underestimated. 

Visit providers like Autism Detect for personal consultations to learn more about how PCB exposure and autism may affect your child’s development and explore ways 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.