Dairy calcium intake, serum vitamin D, and successful weight loss  

Oleh:

Shahar, Danit R. ; Schwarzfuchs, Dan ; Fraser, Drora ; Vardi, Hillel ; Thiery, Joachim ; Fiedler, Georg Martin ; Bluher, Matthias ; Stumvoll, Michael ; Stampfer, Meir J. ; Shai, Iris

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: The American Journal of Clinical Nutrition vol. 92 no. 05 (Nov. 2010), page 1017-1022 .
Topik: OBESITY; Vitamin D; Dairy Calcium
Fulltext: Am J Clin Nutr-2010-Turner-1009-16.pdf (226.23KB)

Ketersediaan

Perpustakaan FK Nomor Panggil: A07.K.2010.02 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Background: The role of dairy calcium intake and serum vitamin D concentrations in weight loss is controversial. Objective: The objective was to assess the association of dairy calcium intake and serum vitamin D with weight loss. Design: We analyzed data from participants in the 2-y Dietary Intervention Randomized Controlled Trial (DIRECT) [n = 322; mean body mass index (BMI; in kg/m2): 31; mean age: 52 y]. A representative sample (n = 126) was followed for 6 mo for serum vitamin D changes. Results: Baseline serum 25-hydroxyvitamin D [25(OH)D] concentrations decreased significantly across the tertiles of baseline BMI (25.6 ± 8.0, 24.1 ± 8.9, and 22.9 ± 6.8 ng/mL, respectively; P for trend = 0.02). Baseline concentrations of vitamin D and dairy calcium intake were not associated with subsequent weight loss. However, in repeated-measures models adjusted for age, sex, baseline BMI, total fat intake, and diet group assignment, higher 6-mo tertile levels of dairy calcium intake (median for tertiles: 156.5, 358.0, and 582.9 mg/d, respectively) and serum 25(OH)D (14.5, 21.2, and 30.2 ng/mL, respectively) were associated with increased weight loss across the 2-y intervention (-3.3, -3.5, and -5.3 kg, respectively, for dairy calcium; P = 0.043; -3.1, -3.8, and -5.6 kg, respectively, for vitamin D; P = 0.013). In a multivariate logistic regression adjusted simultaneously for age, sex, baseline BMI, total fat intake, diet group, vitamin D concentration, and dairy calcium, an increase of 1 SD in dairy calcium intake increased the likelihood of weight loss of >4.5 kg in the preceding 6 mo [odds ratio (OR): 1.45; P = 0.046]. A similar increase was seen for serum 25(OH)D at the 6-mo point (OR: 1.7; P = 0.009). Conclusion: Our study suggests that both higher dairy calcium intake and increased serum vitamin D are related to greater diet-induced weight loss.

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