Insufficient levels of vitamin D have been demonstrated by many
authors as a risk factor for autistic patients, however, the
causality has not been reliably elucidated. In the present study,
levels of calcidiol were determined in group of autistic children
and compared with age matched healthy children as controls.
Suboptimal levels of calcidiol in more than 60 % of both autistic
patients as well as of control group were found. No significant
differences in vitamin D between autistic children and healthy
controls were observed.