Vitamin D supplementation improved symptoms of autism in a recent trial.
Studies have shown an association between the risk of autism spectrum disorder and vitamin D insufficiency. In this latest study, 109 children with autism spectrum disorder were randomized to receive four months of vitamin D3 supplementation or a placebo.
"Autism symptoms—such as hyperactivity, social withdrawal, and others—improved significantly following vitamin D3 supplementation but not after receiving placebo," said Dr. Khaled Saad, lead author of the Journal of Child Psychology and Psychiatry study.
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Khaled Saad et al, Randomized controlled trial of vitamin D supplementation in children with autism spectrum disorder, Journal of Child Psychology and Psychiatry (2016). DOI: 10.1111/jcpp.12652