Effects of a healthy Nordic diet on plasma 25-hydroxyvitamin D concentration in subjects with metabolic syndrome: a randomized, placebo-controlled trial (SYSDIET).
Purpose: At northern latitudes, vitamin D is not synthesized endogenously during winter, causing low plasma 25-hydroxyvitamin D (25(OH)D) concentrations. Therefore, we evaluated the effects of a healthy Nordic diet based on Nordic nutrition recommendations (NNR) on plasma 25(OH)D and explored its di...
| Publicado en: | European Journal of Nutrition Vol. 53; no. 4; pp. 1123 - 1135 |
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| Autores principales: | , , , , , , , , , , , , , , , |
| Formato: | research tables/charts randomized controlled trial Journal Article |
| Publicado: |
Springer Nature
Jun2014
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=96201824&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 96201824 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 14366207 CR0 jtl: European Journal of Nutrition issn: 14366207 maglogo: N pubinfo: dt: Jun2014 vid: 53 iid: 4 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 96201824 103951200 103951200 10.1007/s00394-014-0674-3 96201824 ppf: 1123 ppct: 12 formats: fmt: @attributes: type: P tig: atl: Effects of a healthy Nordic diet on plasma 25-hydroxyvitamin D concentration in subjects with metabolic syndrome: a randomized, placebo-controlled trial (SYSDIET). aug: au: Brader, Lea Rejnmark, Lars Carlberg, Carsten Schwab, Ursula Kolehmainen, Marjukka Rosqvist, Fredrik Cloetens, Lieselotte Landin-Olsson, Mona Gunnarsdottir, Ingibjorg Poutanen, Kaisa Herzig, Karl-Heinz Risérus, Ulf Savolainen, Markku Thorsdottir, Inga Uusitupa, Matti Hermansen, Kjeld affil: Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Tage-Hansens Gade 2 8000 Århus C Denmark sug: subj: Vitamin D Blood Forecasting Scandinavia Nutritional Status Scandinavia Metabolic Syndrome X Diet Therapy Human Randomized Controlled Trials Random Assignment Intervention Trials Pretest-Posttest Design Funding Source Multicenter Studies Vitamin D Blood Parathyroid Hormones Blood Vitamin D Deficiency Diagnosis Eicosapentaenoic Acid Docosahexaenoic Acids Dietary Supplementation Vitamin D Administration and Dosage Eicosapentaenoic Acid Blood Docosahexaenoic Acids Blood Fish Body Mass Index Evaluation Adult Middle Age Aged Male Female Descriptive Statistics Life Style Evaluation Health Behavior Evaluation Data Analysis Software Unpaired T-Tests Wilcoxon Signed Rank Test Mann-Whitney U Test Fisher's Exact Test Chi Square Test Linear Regression Multiple Linear Regression Two-Tailed Test Finland Iceland Sweden Denmark Scandinavia Diet Standards Adult: 19-44 years Middle Aged: 45-64 years Aged: 65+ years Male Female ab: Purpose: At northern latitudes, vitamin D is not synthesized endogenously during winter, causing low plasma 25-hydroxyvitamin D (25(OH)D) concentrations. Therefore, we evaluated the effects of a healthy Nordic diet based on Nordic nutrition recommendations (NNR) on plasma 25(OH)D and explored its dietary predictors. Methods: In a Nordic multi-centre trial, subjects ( n = 213) with metabolic syndrome were randomized to a control or a healthy Nordic diet favouring fish (≥300 g/week, including ≥200 g/week fatty fish), whole-grain products, berries, fruits, vegetables, rapeseed oil and low-fat dairy products. Plasma 25(OH)D and parathyroid hormone were analysed before and after 18- to 24-week intervention. Results: At baseline, 45 % had vitamin D inadequacy (<50 nmol/l), whereas 8 % had deficiency (<25 nmol/l). Dietary vitamin D intake was increased by the healthy Nordic diet ( P < 0.001). The healthy Nordic and the control diet reduced the prevalence of vitamin D inadequacy by 42 % ( P < 0.001) and 19 % ( P = 0.002), respectively, without between-group difference ( P = 0.142). Compared with control, plasma 25(OH)D ( P = 0.208) and parathyroid hormone ( P = 0.207) were not altered by the healthy Nordic diet. Predictors for 25(OH)D were intake of vitamin D, eicosapentaenoic acids (EPA), docosahexaenoic acids (DHA), vitamin D supplement, plasma EPA and plasma DHA. Nevertheless, only vitamin D intake and season predicted the 25(OH)D changes. Conclusion: Consuming a healthy Nordic diet based on NNR increased vitamin D intake but not plasma 25(OH)D concentration. The reason why fish consumption did not improve vitamin D status might be that many fish are farmed and might contain little vitamin D or that frying fish may result in vitamin D extraction. Additional ways to improve vitamin D status in Nordic countries may be needed. pubtype: Academic Journal doctype: research tables/charts randomized controlled trial Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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