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2. Calcium metabolism - Wikipedia

   en.wikipedia.org/wiki/Calcium_metabolism

   The kidney influences the plasma ionized calcium concentration in yet another manner. It processes vitamin D 3 into calcitriol, the active form that is most effective in promoting the intestinal absorption of calcium. This conversion of vitamin D 3 into calcitriol, is also promoted by high plasma parathyroid hormone levels. [4] [5]

3. Experts Say This Is Real Difference Between Vitamin D and D3

   www.aol.com/experts-real-difference-between...

   Along with calcium, vitamin D also helps our bodies absorb magnesium and phosphate, adds Melissa Prest, D.C.N., R.D.N., national media spokesperson for the Academy of Nutrition and Dietetics and ...

4. Vitamin D - Wikipedia

   en.wikipedia.org/wiki/Vitamin_D

   While some studies have found that vitamin D 3 raises 25(OH)D blood levels faster and remains active in the body longer, [45] [46] others contend that vitamin D 2 sources are equally bioavailable and effective for raising and sustaining 25(OH)D. [47] [48] If digestive disorders compromise absorption, then intramuscular injection of up to ...

5. Calcium supplement - Wikipedia

   en.wikipedia.org/wiki/Calcium_supplement

   [34] [35] Calcium carbonate as a calcium supplement source has several benefits compared to other forms like calcium citrate, lactate, or gluconate, because of highest content of elemental calcium by weight (40%), providing more calcium per dose compared to other forms. It is the least expensive form of calcium, making it a cost-effective ...

6. Calcitriol - Wikipedia

   en.wikipedia.org/wiki/Calcitriol

   Calcitriol is a hormone and the active form of vitamin D, normally made in the kidney. [8] [9] [10] It is also known as 1,25-dihydroxycholecalciferol.It binds to and activates the vitamin D receptor in the nucleus of the cell, which then increases the expression of many genes. [11]

7. Vitamin D not recommended for preventing fractures in older ...

   www.aol.com/news/vitamin-d-not-recommended...

   The U.S. Preventive Services Task Force released a draft recommendation advising against using vitamin D to prevent falls and fractures in people over 60. Pharmacist Katy Dubinsky weighs in.