Glutathione metabolism in the prefrontal brain of adults with high functioning autism spectrum disorder: an MRS study Frontiers Gut microbiota and autism spectrum disorder: advances in dietary intervention strategies based on the microbiota gut brain axis mechanism 87 studies. 9,000+ children. and most parents have never heard this conversation. A meta analysis of 87 studies involving over 9,000 children found consistently lower glutathione levels and higher oxidative stress in children Efficacy of Folic Acid Supplementation in Autistic Children Participating in Structured Teaching: An Open Label Trial