Abstract Title:

The relationship between the vitamin serum 25(OH)D and the B12 concentrations in obese women.

Abstract Source:

Minerva Med. 2017 Nov 7. Epub 2017 Nov 7. PMID: 29115801

Abstract Author(s):

Nikola Curic, Branislava Ilincic, Natasa Milic, Velibor Cabarkapa, Stanislava Nikolic, Milica Medic-Stojanoska, Rinaldo Pellicano, Ludovico Abenavoli

Article Affiliation:

Nikola Curic


BACKGROUND: In obesity, low levels of vitamin D (VD) and vitamin B12 (VB12), may be the result of different pathophysiological mechanisms, but the possible association between them has not yet been defined. The aim of this cross-sectional analysis was to investigate the possible relationship between serum 25-hydroxyvitamin D (25(OH)D) and VB12 levels in middle aged women.

METHODS: In 80 women, we indirectly evaluated body composition and body volumes [extracellular fluid volume (ECV) and total body water (TBW)] by anthropometric and bioelectrical impedance analysis. Vitamin D and VB12 status was assessed by laboratory measurement [serum 25(OH)D levels by electrochemiluminescent immunoassay; VB12 by chemiluminescent microparticle immunoassay].

RESULTS: Obese women were mostly VD deficient [25(OH)D below 50 nmol/L; 40/50, 80%]. Also, among obese we observed presence of VB12 deficiency [VB12 below 148 pmol/L; 13/50, 26%) and marginal depletion of VB12 level (marginal VB12 status 148-221 pmol/L; 20/50, 40%). All anthropometric indicators of obesity, ECV and TBW were significantly associated with both, 25(OH)D and VB12 (p<0.001) levels. In univariate regression analysis serum level of 25(OH)D was significantly associated with VB12 levels (R2=0.170, p<0.001). In regression models, 25(OH)D was significantly associated with VB12 level, independently of fat mass and extracellular fluid volume.

CONCLUSIONS: Obesity may negatively affect VB12 level, indirectly, by reducing 25(OH)D level in middle aged women.

Study Type : Human Study

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