Prevalence and predictors of vitamin D deficiency in five immigrant groups living in Oslo, Norway: the Oslo Immigrant Health Study

Holvik, Kristin; Meyer, Haakon E; Haug, Egil; Brunvand, L

doi:10.1038/sj.ejcn.1602033

Cited by 136 publications

(141 citation statements)

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“…in Northern hemisphere (Holvik et al, 2005;Andersen et al, 2007). People living in Norway have poor access to vitamin D from the sun, because of high latitude and long winter seasons (Wacker and Holick, 2013).…”

Section: Discussionmentioning

confidence: 99%

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Vitamin D status in psychotic disorder patients and healthy controls – The influence of ethnic background

Nerhus

Berg

Dahl

et al. 2015

Psychiatry Research

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Vitamin D deficiency is common among patients with psychotic disorders and could be due to unknown disease mechanisms or contingent factors. However most studies are performed in chronic patients and have often failed to address the influence of ethnicity on vitamin D levels in clinical samples. We investigated serum concentrations of 25-hydroxy vitamin D (S-25 OH D) in first episode patients compared to patients with multi episodes and healthy controls; with a specific focus on differences between visible ethnic minorities and participants from the majority population. A total of 284 participants were included in this cross-sectional study. First episode patients with a DSM-IV psychotic disorder were matched on age, gender and ethnicity to participants from a multi episode patient sample (1:1) and healthy controls (1:2). We did not find any differences between either patient groups or the healthy controls, but participants from visible ethnic minorities had significantly lower S-25 OH D than participants from the majority population. This implies that S-25 OH D should be routinely measured in persons from visible ethnic minorities since low levels are associated with higher levels of depressive symptoms.

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Section: Discussionmentioning

confidence: 99%

“…In the Oslo Immigrant Health Study, S-25 OH D was measured by a radioimmunoassay (RIA kit from Diasorin) (Holvik et al, 2005). The equation LC/MS-MS = 1.16 x (RIA) -9 was calibrated at the laboratory for comparisons and the calibrated values from the Oslo Immigrant Health Study are used in the current study.…”

Section: Biochemicalmentioning

confidence: 99%

Vitamin D status in psychotic disorder patients and healthy controls – The influence of ethnic background

Nerhus

Berg

Dahl

et al. 2015

Psychiatry Research

View full text Add to dashboard Cite

show abstract

“…Country of origin, genetic traits, and cultural behaviour are important factors in determining vitamin D levels. For example, Vietnamese immigrants in Norway were reported to have lower prevalence of hypovitaminosis D compared to Turkish or Pakistani immigrants [40]. In Canada, young women from Asian and to a lesser extent, African origins, showed lower levels of vitamin D compared to whiteCanadian women [126].…”

Section: Genetic Traits and Cultural Behaviourmentioning

confidence: 99%

“…In the Oslo immigrant study, prevalence of hypovitaminosis D was higher in those born in Pakistan and lower in those born in Vietnam compared to the other ethnic groups. Fatty fish intake and cod liver oil supplements were important determinant factors of vitamin D status in the groups studied [40]. One small study in Thailand showed high serum levels of 25(OH)D [37], possibly related to its geographical location close to the equator.…”

Section: Asiamentioning

confidence: 99%