Evidence of the gluten free and casein free diet in autism spectrum disorders (ASDs): a systematic review
Keywords: 
Gluten-free
Casein-free diet
Autism
Autism Spectrum Disorders (ASDs)
Review
Issue Date: 
2014
Publisher: 
SAGE Publications
ISSN: 
0883-0738
Citation: 
Marí-Bauset S, Zazpe I, Mari-Sanchis A, Llopis-González A, Morales-Suárez-Varela M. Evidence of the gluten free and casein free diet in autism spectrum disorders (ASDs): a systematic review. J Child Neurol. 2014 Dec;29(12):1718-1727.
Abstract
In autism spectrum disorders, many parents resort to alternative treatments and these are generally perceived as risk free. Among these, the most commonly used is the gluten-free casein-free diet. The objective of this work was to conduct a systematic review of studies published from 1970 to date related to the gluten-free casein-free diet in autism spectrum disorders patients. Few studies can be regarded as providing sound scientific evidence since they were blinded randomised controlled trials, and even these were based on small sample sizes, reducing their validity. We observed that the evidence on this topic is currently limited and weak. We recommend that it should be only used after the diagnosis of an intolerance or allergy to foods containing the allergens excluded in gluten-free casein-free diets. Future research should be based on this type of design, but with larger sample sizes.

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