Cited by 125Vitamin D Research StudiesParathyroid Disorders and TreatmentsSchizophrenia research and treatment

Low serum levels of 25-hydroxyvitamin D (25-OHD) among psychiatric out-patients in Sweden: Relations with season, age, ethnic origin and psychiatric diagnosis

Humble, Mats B., Gustafsson, Sven, Bejerot, Susanne·2010·The Journal of Steroid Biochemistry and Molecular Biology

Abstract

In a chart review at a psychiatric out-patient department, latitude 59.3 degrees N, a sample of patients with tests of serum 25-hydroxy-vitamin D (25-OHD) and plasma intact parathyroid hormone (iPTH) was collected, together with demographic data and psychiatric diagnoses. During 19 months, 117 patients were included. Their median 25-OHD was 45 nmol/l; considerably lower than published reports on Swedish healthy populations. Only 14.5% had recommended levels (over 75). In 56.4%, 25-OHD was under 50 nmol/l, which is related to several unfavourable health outcomes. Seasonal variation of 25-OHD was blunted. Patients with ADHD had unexpectedly low iPTH levels. Middle East, South-East Asian or African ethnic origin, being a young male and having a diagnosis of autism spectrum disorder or schizophrenia predicted low 25-OHD levels. Hence, the diagnoses that have been hypothetically linked to developmental (prenatal) vitamin D deficiency, schizophrenia and autism, had the lowest 25-OHD levels in this adult sample, supporting the notion that vitamin D deficiency may not only be a predisposing developmental factor but also relate to the adult patients' psychiatric state. This is further supported by the considerable psychiatric improvement that coincided with vitamin D treatment in some of the patients whose deficiency was treated.

Integrity signals

Registry

Crossref · 10.1016/j.jsbmb.2010.03.013

Cites

34 of 34 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Autistic and schizophrenic patients had the lowest median 25(OH)D concentrations compared to other psychiatric disorders, 32 (25th-75th percentile, 23-39) nmol/L and 35 (24-53) nmol/L, respectively, vs. >40 in other patients.

    “Autistic and schizophrenic patients had the lowest median 25(OH)D concentrations compared to other psychiatric disorders, 32 (25th–75th percentile, 23–39) nmol/L and 35 (24–53) nmol/L, respectively, vs. >40 in other patients.”

    From Vitamin D and Autism Spectrum Disorder: A Literature Review (2016) · cites this paper as [119]

  • No conclusion can be drawn from Humble et al. because it was not designed to assess the efficacy of vitamin D on autism, no placebo or control arm was included, different doses and types of vitamin D were used, and levels of 25(OH)D after treatment were not reported.

    “No conclusion can be drawn from this study because it was not designed to assess the efficacy of vitamin D on autism and it was part of clinical practice, no placebo or control arm was included, different doses and types of vitamin D was used, and levels of 25(OH)D after treatment was not reported.”

    From Vitamin D and Autism Spectrum Disorder: A Literature Review (2016) · cites this paper as [119]

  • Humble et al. (2010) reported a considerable improvement in psychosis or depression with the effective treatment of vitamin D deficiency in several patients.

    “Humble et al. (2010), in a clinical quality assurance project, reported a considerable improvement in psychosis or depression with the effective treatment of vitamin D deficiency in several patients.”

    From Vitamin D and Autism Spectrum Disorder: A Literature Review (2016) · cites this paper as [119]

Cites

Flagged first, then by citations

2 of the 36 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Humble, M. B., Gustafsson, S., & Bejerot, S.
Affiliations
Karolinska Institutet (SE)
Corresponding author
Humble, Mats B.
Venue
The Journal of Steroid Biochemistry and Molecular Biology
Publisher
Elsevier BV
Published
2010-07
Volume
121
Issue
1-2
Pages
467-470
ISSN
0960-0760 (ISSN-L)
OpenAlex
W2158479500
Cited by
125
References
36
Citations by year
2026: 1 · 2025: 5 · 2024: 3 · 2023: 6 · 2022: 4 · 2021: 3 · 2020: 6 · 2019: 9 · 2018: 9 · 2017: 11 · 2016: 10 · 2015: 13 · 2014: 11 · 2013: 11 · 2012: 11
FWCI
7.38
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Steroid Biochemistry and Molecular Biology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Vitamin D Research Studies
  • Health Sciences › Medicine › Nephrology › Parathyroid Disorders and Treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
Keywords
vitamin D deficiency, 25-hydroxyvitamin D, psychiatric outpatients, seasonal variation, parathyroid hormone, autism spectrum disorder, schizophrenia, attention deficit hyperactivity disorder, ethnicity, age, vitamin D supplementation, adult psychiatric disorders
MeSH terms
Adolescent, Adult, Age Factors, Aged, Mental Disorders, Ethnicity, Female, Humans, Male, Middle Aged, Outpatients, Quality Control, Seasons, Sweden, Vitamin D, Vitamin D Deficiency

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review