The Journal of clinical endocrinology and metabolism
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J. Clin. Endocrinol. Metab. · Oct 2014
Randomized Controlled Trial Multicenter StudyGenetic variants in CYP2R1, CYP24A1, and VDR modify the efficacy of vitamin D3 supplementation for increasing serum 25-hydroxyvitamin D levels in a randomized controlled trial.
Adequate serum 25-hydroxyvitamin D concentrations, [25(OH)D], are required for optimal bone health, and low levels are associated with chronic diseases. ⋯ The increase in [25(OH)D] attributable to vitamin D3 supplementation may vary according to common genetic differences in vitamin D 25-hydroxylase (CYP2R1), 24-hydroxylase (CYP24A1), and the vitamin D receptor (VDR) genes. These findings have implications for achieving optimal vitamin D status and potentially for vitamin D-related health outcomes.
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J. Clin. Endocrinol. Metab. · Oct 2014
Randomized Controlled TrialDietary sodium restriction decreases insulin secretion without affecting insulin sensitivity in humans.
Interruption of the renin-angiotensin-aldosterone system prevents incident diabetes in high-risk individuals, although the mechanism remains unclear. ⋯ Low dietary sodium intake reduces insulin secretion in humans, independent of insulin sensitivity.