This is encouraging and could feed directly into the treatment of children with autism who are part of the Snowdrop programme
"This study is the first double-blinded RCT proving the efficacy of vitamin D3 in ASD patients. Depending on the parameters measured in the study, oral vitamin D supplementation may safely improve signs and symptoms of ASD and could be recommended for children with ASD. At this stage, this study is a single RCT with a small number of patients, and a great deal of additional wide-scale studies are needed to critically validate the efficacy of vitamin D in ASD."
With thanks to Wiley online library and the Journal of Child Psychology and Psychiatry.