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Probiotics and ASD

Published November 2016

Download the full evidence summary PDF: Probiotics and ASD

 PLEASE NOTE: This summary was produced more than 4 years ago. Information provided may be out of date. If you think it would be helpful to update this summary please contact us at pencru@exeter.ac.uk

What Were We Asked?

We were asked whether probiotics are effective for children with Autistic Spectrum Disorder.


Key Findings:

  • Probiotics are living ‘micro-organisms’ that do not cause disease. They can be used as a food ingredient or taken as a supplement.
  • No studies could be found that demonstrate probiotics reduce behavioural symptoms of autism.
  • Until an evidence-base is established and there is more understanding about the effects, we would caution against long-term use of probiotics.


Note: This information is produced by PenCRU researchers and reviewed by external experts. The views expressed are those of PenCRU at the University of Exeter Medical School and do not represent the views of the Cerebra charity, or any other parties mentioned. We strongly recommend seeking medical advice before undertaking any treatments/therapies.