Vitamin D status in recently arrived immigrants from Africa and Asia: a cross-sectional study from Norway of children, adolescents and adults

Eggemoen, Åse Ruth; Knutsen, Kirsten Irene Valebjørg; Dalen, Ingvild; Jenum, Anne Karen

doi:10.1136/bmjopen-2013-003293

Cited by 55 publications

(62 citation statements)

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“…There are no data on vitamin D status in Somali women living in Somalia. A Norwegian study on recently arrived immigrants from Africa showed that 73% had S‐25(OH)D < 50 nmol/l and 24% had S‐25(OH)D < 25 nmol/l …”

Section: Discussionmentioning

confidence: 99%

“…This is a long time, relative to the~2-week half-life of S-25(OH)D. 19 There are no data on vitamin D status in Somali women living in Somalia. A Norwegian study on recently arrived immigrants from Africa showed that 73% had S-25(OH)D < 50 nmol/l and 24% had S-25(OH)D < 25 nmol/ l. 20 Clothing habits may affect vitamin D status in young immigrant women. 21 All subjects in the present studies were veiled.…”

Section: Discussionmentioning

confidence: 99%

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Vitamin D treatment in Somali women living in Sweden – Two randomized, placebo‐controlled studies

Osmancevic

Demeke

Gillstedt

et al. 2016

Clinical Endocrinology

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SummaryObjective There is limited information about the prevalence of vitamin D deficiency and the effects of treatment on immigrants. The effects of oral vitamin D intake and UVB treatment on vitamin D status in healthy Somali women living in Sweden were analysed. Design Two studies were carried out; a randomized, doubleblind, placebo-controlled study, with oral drops of 800 IU and 1600 IU cholecalciferol and similar amounts of placebo given daily during 12 weeks and a single-blind, placebo-controlled study, using UVB (4Á3-8Á7 J/cm 2 ) or Woods lamp (placebo) on the upper body, or the face and hands.Patients One-hundred fourteen Somali women, mean age 34 years, latitude 0-10°N, living in Sweden >2 years, latitude 57°N, participated. Measurements Serum 25-hydroxyvitamin D (S-25(OH)D) was monitored before, every 6 weeks and at 3 months after treatment.Results The majority of the women (n = 83, 73%) were vitamin D-deficient, S-25(OH)D < 25 nmol/l at start. There was a dose-dependent increase in S-25(OH)D levels (P = 0Á001, stratified Jonckheere-Terpstra test) with a mean increase after twelve weeks in women treated with 800 IU/day and women treated with 1600 IU/day of 18 nmol/l (95% CI: 6-29, median = 17) and 29 nmol/l (95% CI: 17-42, median = 34), respectively. S-25 (OH)D decreased during follow-up but remained above baseline levels. The placebo group remained unchanged throughout the study. UVB treatment increased S-25(OH)D dose-dependently after 6 weeks (P = 0Á03, Jonckheere-Terpstra test).Conclusions Vitamin D deficiency was common in immigrants living at higher latitudes. Vitamin D treatment increased S-25 (OH)D levels dose-dependently during 3 months. The effect was maintained for another 3 months. At least 1600 IU/day is recommended. The dropout rate was high.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Vitamin D treatment in Somali women living in Sweden – Two randomized, placebo‐controlled studies

Osmancevic

Demeke

Gillstedt

et al. 2016

Clinical Endocrinology

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“…Vitamin D deficiency is prevalent worldwide and high prevalence of vitamin D insufficiency and secondary hyperparathyroidism (SHPT) among non-Western immigrant populations living in Western countries has been reported (Islam et al, 2012, Meyer et al, 2004, Lowe et al, 2010). Recent studies in Norway have shown that in immigrants with background from Sub-Sahara Africa, Middle East and South Asia, nearly 80% had 25(OH)D < 50 nmol/L and approximately one-third had 25(OH)D < 25 nmol/L regardless of season (Eggemoen et al, 2013, Madar et al, 2009, Holvik et al, 2005). These studies suggest that the impact of vitamin D deficiency on the skeletal homeostasis of immigrants is of concern (Roy et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Effect of vitamin D3-supplementation on bone markers (serum P1NP and CTX): A randomized, double blinded, placebo controlled trial among healthy immigrants living in Norway

et al. 2015

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ObjectiveVitamin D is essential for the maintenance of calcium homeostasis and bone mineralization; and low serum 25-hydroxyvitamin D (s-25-(OH)D) concentrations are associated with increased bone turnover. However, there is a lack of randomized controlled trials that have investigated the effect of vitamin D treatment on bone turnover in immigrant populations. We aimed to investigate the effect of 16-week daily vitamin D3 supplementation on bone formation marker serum procollagen type 1 amino-terminal propeptide (P1NP) and bone resorption marker C-terminal crosslinked telopeptide of type I collagen (CTX).DesignDouble-blind, randomized, placebo-controlled trial.SettingImmigrant community centers in Oslo, Norway.Participants251 healthy adults aged 18–50 years with a non-Western immigrant background were recruited.Intervention16 weeks of daily oral supplementation with either 10 μg vitamin D3, 25 μg vitamin D3, or placebo.Main outcome measuresDifference in change during the 16-week intervention between the intervention groups combined (10 or 25 μg of vitamin D3/day) and placebo, in serum P1NP and serum CTX.ResultsA total of 214 (85%) participants completed the study. S-25-(OH)D increased from 29 nmol/L at baseline to 49 nmol/L in the intervention group with no significant change in the placebo group. However, there was no difference in change of serum P1NP (mean difference: − 1.2 μg/L (95% CI: − 5.4, 2.9, P = 0.6)) and serum CTX (mean difference: − 0.005 μg/L (95% CI: − 0.03, 0.02, P = 0.7)) between those receiving vitamin D3 supplementation compared with placebo. The plasma PTH had decreased by a mean of − 1.97 pmol/L (95% CI: − 2.7, − 1.3, P < 0.0001) in the vitamin D3 group compared to placebo.ConclusionsSupplementation with 10 or 25 μg oral vitamin D3 during winter and spring for 16 weeks did not significantly affect serum P1NP and serum CTX, despite increasing s-25(OH)D and decreasing PTH in a healthy immigrant population with low baseline vitamin D status.Trial registration number: NCT01263288.

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“…In Norway, a study has been performed in 2013 to compare the serum vitamin D levels among different populations living in Norway. The results of this study have revealed that immigrants from South Asia, the Middle East, and Africa were found to be more vitamin D-deficient (25-(OH) D < 20 ng/mL) than East Asians (63). Notably, the authors have recommended the routine measurement of vitamin D levels and early detection of vitamin D deficiency in these populations (Middle East and Africa).…”

Section: Discussionmentioning

confidence: 74%

The prevalence of vitamin D deficiency between Saudis and non-Saudis in Al-Madinah Al-Munawarah a cross-sectional study

Nasr

Othman

Hassan

et al. 2019

Preprint

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BackgroundVitamin D, or the “sunshine” hormone became an attractable topic that recently captivates many researchers. The increased prevalence of vitamin D deficiency became an alarming health concern despite the accumulative evidence exploring its crucial role not only in bone metabolism, but also in a variety of pleiotropic functions throughout the various body organs. The aim of this study is to compare the prevalence that might influence vitamin D deficiency among Saudi and non-Saudi nationalities in Almadinah Almunawarh, Saudi Arabia, and to study the different factors that may have an influence in the difference of this prevalence like the marital status, occupation, smoking, sunlight exposure, education, and dietary habits.MethodsThe study was a cross sectional study done in the medical care unit in Taiba University Almadina Almunawarah in which, 65 healthy male individuals from different nationalities (Saudis and non-Saudis), aged 18 - 65 years were divided into 2 groups, 33 Saudis and 32 non-Saudis. A sociodemographic questionnaire was filled by the study participants and 25-OH vitamin D3 (25(OH)D3) concentrations were detected by electrochemiluminescence immunoassay.ResultsResults showed a Significant percentage of the participants in the Saudi group (n = 30, 91%) suffered from deficiency in vitamin D levels [25 (OH) D < 20 ng/ml] 12.57 ± 4.82 (mean ± SD), compared to only 47% (n = 15) in the non-Saudi group [21.56 ± 6.82 (mean ± SD)]. Vitamin D deficiency was found to be significantly higher in the Saudi group than the non-Saudi group with P = 0.001.ConclusionResults showed a significant increase in vitamin D deficiency in Saudi population than the non-Saudis P = 0.001. The occupation status was found to be the only factor positively correlated with vitamin D deficiency.

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Vitamin D status in recently arrived immigrants from Africa and Asia: a cross-sectional study from Norway of children, adolescents and adults

Cited by 55 publications

References 32 publications

Vitamin D treatment in Somali women living in Sweden – Two randomized, placebo‐controlled studies

Vitamin D treatment in Somali women living in Sweden – Two randomized, placebo‐controlled studies

Effect of vitamin D3-supplementation on bone markers (serum P1NP and CTX): A randomized, double blinded, placebo controlled trial among healthy immigrants living in Norway

The prevalence of vitamin D deficiency between Saudis and non-Saudis in Al-Madinah Al-Munawarah a cross-sectional study

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