Undermethylation, Autism & Mitochondria What's the Connections Brain derived neurotrophic factor levels and oxidative stress in autism: evidence from children and a mouse model 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 What Causes Autism? Vitamin A Deficiency & the Developing Brain Chronic exposure to xenobiotic pollution leads to significantly higher total glutathione and lower reduced to oxidized glutathione ratio in red blood cells of children with autism ScienceDirect