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12 Αυγ 2024 · Various studies have estimated that it takes up to 24 hours for vitamin D3 supplements to raise vitamin D levels in the bloodstream. However, vitamin D then needs to be converted to its active form (calcitriol, also called 1,25-dihydroxycholecalciferol or 25(OH)D).
On completion of this article, you should be able to (1) recognize patients at risk for vitamin D deficiency, (2) optimally use and interpret serum vitamin D testing, and (3) determine the optimal vitamin D therapy required to treat or prevent vitamin D deficiency in adults.
17 Ιουλ 2023 · Systemically, calcitriol binds to vitamin-D receptors in the kidneys, parathyroid glands, intestines, and bones to increase serum blood calcium levels by promoting absorption in the intestines, renal tubular reabsorption in the kidneys, and release from bone.
Abstract. Nowadays, in modern societies, many people can be at high risk to have low vitamin D levels. Therefore, testing of serum 25-hydroxy-vitamin D (25OH-D) levels should be performed before prescribing them vitamin D supplementation.
16 Μαΐ 2023 · INTRODUCTION. Vitamin D has a variety of actions on calcium, phosphate, and bone metabolism. Its most important biological action is to promote enterocyte differentiation and the intestinal absorption of calcium and phosphorus, thereby promoting bone mineralization.
For this reason, calcitriol and its analogs do not constitute adequate replacement in managing vitamin D needs of such patients. Optimal serum 25 (OH)D levels are greater than 32 ng/mL (80 nmol/L). The consequences of low 25 (OH)D status include increased risk of various chronic diseases, ranging from hypertension to diabetes to cancer.
6 Νοε 2024 · It can indicate whether the vitamin D levels in your body are low or high. Low vitamin D levels can weaken bones and increase the risks of falls and fractures. High vitamin D levels are rare but ...
