One by one, study by study, organized medicine is beginning to realize that low vitamin D levels may be contributing to the plague of psychiatric disorders that are laying our children low.
Researchers from Oregon’s medical school discovered that children with mental problems (psychosis, depression, autism, disruptive disorders, and bipolar disorder) were 50% more likely to have severe vitamin D deficiency. Indeed, 61% of the studied children had levels below 30 ng/ml. The authors, Dr. Keith Cheng and Ms. Mini Zhang, did not report the number of children with natural levels (> 40 ng/ml).
Interestingly, psychotic children had the lowest vitamin D levels, lower that the autistic children, although exact percentile breakdowns were not reported by the Medscape reporter. If you have never seen a flagrantly psychotic child, count yourself lucky.
Based on this study alone, the authors seemed to recommend that vitamin D deficiency in childhood be treated although they hedged when pressed to give a healthy 25(OH)D level. The Vitamin D Council does not hedge: healthy children need the same vitamin D levels as children who regularly play in the sun, around 50 ng/ml.