Effects of vitamin D-fortified oil intake versus vitamin D supplementation on vitamin D status and bone turnover factors: A double blind randomized clinical trial.
Clin Nutr ESPEN
; 47: 28-35, 2022 02.
Article
em En
| MEDLINE
| ID: mdl-35063214
ABSTRACT
PURPOSE:
The aim of this study was to compare the effect of vitamin D fortified oil consumption and vitamin D supplementation on serum 25-hydroxy vitamin D and bone turnover factors.METHODS:
This study was a double-blind, parallel, randomized controlled clinical trial conducted over 12 weeks on 93 healthy participants aged 18-30 years. Participants were randomly allocated to 1 of the 3 groups (a) supplement (a tablet of 1000 IU vitamin D supplement + 25 g canola oil daily, n = 31); (b) fortified oil (a placebo tablet + 25 g canola oil fortified with 1000 IU vitamin D daily, n = 30) and (c) control (a placebo tablet + 25 g canola oil, n = 32). Before and after the intervention 25-hydroxy vitamin D (25(OH)D1), parathyroid hormone (PTH2), bone alkaline phosphatase (BAP3) and collagen type 1 cross-linked C-telopeptide I (CTX4) were assessed.RESULTS:
Serum 25(OH)D increased more in the vitamin D supplement group compared to the controls (P = 0.001). In addition, subgroup analysis revealed that just in the vitamin D sufficient subgroup, serum 25(OH)D increased more in both vitamin D supplement group and vitamin D fortified oil group, compared to the controls (P = 0.001 for both). The mean differences of PTH, BAP, and CTX were not significantly different among the study groups.CONCLUSION:
Consumption of 1000 IU vitamin D per day for 12 weeks as a supplement or fortified oil could enhance the serum vitamin D in main population. However, the protective effect of vitamin D supplementation and oil fortification was seen just in vitamin D sufficient subgroup, not vitamin D deficient one. Besides, this dose of vitamin did not have a noticeable effect on bone turnover markers in this period. Registered under Iranian Registry of Clinical Trials (IRCT.ir) with ID number of IRCT20180708040401N1.Palavras-chave
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Vitamina D
/
Alimentos Fortificados
Tipo de estudo:
Clinical_trials
Limite:
Adolescent
/
Adult
/
Humans
País como assunto:
Asia
Idioma:
En
Ano de publicação:
2022
Tipo de documento:
Article