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Controlled Clinical Trial
, 46 (1), 205-220

The Gluten-Free/Casein-Free Diet: A Double-Blind Challenge Trial in Children With Autism

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Controlled Clinical Trial

The Gluten-Free/Casein-Free Diet: A Double-Blind Challenge Trial in Children With Autism

Susan L Hyman et al. J Autism Dev Disord.

Abstract

To obtain information on the safety and efficacy of the gluten-free/casein-free (GFCF) diet, we placed 14 children with autism, age 3-5 years, on the diet for 4-6 weeks and then conducted a double-blind, placebo-controlled challenge study for 12 weeks while continuing the diet, with a 12-week follow-up. Dietary challenges were delivered via weekly snacks that contained gluten, casein, gluten and casein, or placebo. With nutritional counseling, the diet was safe and well-tolerated. However, dietary challenges did not have statistically significant effects on measures of physiologic functioning, behavior problems, or autism symptoms. Although these findings must be interpreted with caution because of the small sample size, the study does not provide evidence to support general use of the GFCF diet.

Keywords: Autism; Casein-free; Diet therapy; Gluten-free; Treatment outcomes.

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