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Are there harmful therapies for autism that should be avoided? 

Posted
Updated
ByMy Patient Advice
Author: Beatrice Holloway, MSc | Reviewed by: Dr. Rebecca Fernandez, MBBS

Families are often exposed to a wide range of autism therapies, some evidence-based, some unproven, and some potentially harmful. According to NICE and WHO, autism support must be safe, evidence-based, rights-focused and least-restrictive. Interventions that lack evidence or carry risks should not be used, and families should be protected from misleading or unsafe claims. 

Learn more about Autism testing & diagnosis

Therapies NICE says should not be used 

NICE is clear that several treatments should not be offered for autism at any age because they lack evidence and may cause harm. These include: 

  • Secretin 
  • Chelation therapy 
  • Hyperbaric oxygen therapy (HBOT) 
  • Auditory integration training and neurofeedback for communication 
  • Exclusion diets (such as gluten-free/casein-free) for core autism features 
  • Omega-3 supplements for sleep problems 
  • Facilitated communication, which NICE states has caused harm and is not effective 

The RCSLT also confirm that facilitated communication is a discredited method that should not be used under any circumstances. 

Unproven or unsafe biomedical “treatments” 

Global health bodies warn against alternative or biomedical “cures” marketed to families. The WHO advises avoiding any therapy claiming to cure autism and stresses that only evidence-based psychosocial interventions should be used. 

Examples of unsafe or unproven treatments include: 

  • Miracle Mineral Solution (MMS) / chlorine dioxide (a bleach) 
  • Unregulated supplements or injections marketed online 
  • Extreme restrictive diets that risk malnutrition 
  • Unauthorized detox or hormonal therapies 

UK charities and safeguarding bodies have raised concerns about these products, noting risks of poisoning, organ damage or delayed access to legitimate care. 

Behavioural interventions and ethical concerns 

While behavioural and developmental interventions can support some autistic people, evidence from NIHR and BMJ reviews shows that harms are rarely tracked, making it difficult to weigh benefits against potential adverse effects. Concerns include: 

  • Over-emphasis on compliance 
  • Pressure to suppress natural autistic behaviours 
  • Emotional distress or masking 
  • Sessions delivered without assent, consent or autonomy 

Neurodiversity-affirming guidance from the RCOT and RCSLT warns against practices that push masking or “normalisation,” urging therapists to respect autistic identity and avoid coercive goals. 

Restrictive or coercive practices 

Restraint, seclusion, and other restrictive interventions carry significant physical and psychological risks. NHS England and safeguarding frameworks state these must only be used to prevent immediate harm, be the least-restrictive option and last for the shortest possible time. Reviews of inpatient care show that inappropriate restraint and seclusion remain concerns for autistic people, particularly young people. 

Takeaway 

According to NICE, WHO, NHS England, RCSLT and RCOT, therapies that are unsafe, coercive or unsupported by evidence should be avoided. Safe autism supports prioritises dignity, autonomy, evidence-based approaches and the least-restrictive options helping autistic people thrive without exposure to harmful or misleading treatments. 

Beatrice Holloway, MSc
Author

Beatrice Holloway is a clinical psychologist with a Master’s in Clinical Psychology and a BS in Applied Psychology. She specialises in CBT, psychological testing, and applied behaviour therapy, working with children with autism spectrum disorder (ASD), developmental delays, and learning disabilities, as well as adults with bipolar disorder, schizophrenia, anxiety, OCD, and substance use disorders. Holloway creates personalised treatment plans to support emotional regulation, social skills, and academic progress in children, and delivers evidence-based therapy to improve mental health and well-being across all ages.

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. 

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