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2. 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, [43] [44] others contend that vitamin D 2 sources are equally bioavailable and effective for raising and sustaining 25(OH)D. [45] [46] If digestive disorders compromise absorption, then intramuscular injection of up to ...

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

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

   Vitamin D3 needs for the average adult between the ages 19 and 70 years old is 600 IU (15 mcg) per day, says Pelitera. “This includes foods, for example, 1 cup of fortified milk contains about ...

4. Vitamin D toxicity - Wikipedia

   en.wikipedia.org/wiki/Vitamin_D_toxicity

   Vitamin D toxicity, ... 800 IU for those over 70 years). Overdose has been observed at 1,925 μg/d (77,000 IU per day). ... Rural men around Delhi average 44 nmol/L ...

5. Cholecalciferol - Wikipedia

   en.wikipedia.org/wiki/Cholecalciferol

   Cholecalciferol is a form of vitamin D which is naturally synthesized in skin and functions as a pro-hormone, being converted to calcitriol. This is important for maintaining calcium levels and promoting bone health and development. [4] As a medication, cholecalciferol may be taken as a dietary supplement to prevent or to treat vitamin D ...

6. Wait, Should You Be Taking Vitamin D2 or D3? - AOL

   www.aol.com/wait-taking-vitamin-d2-d3-150000295.html

   But “vitamin D3 is more bioavailable (a.k.a has a stronger ability to be absorbed and used in the body), which is why people tend to prefer vitamin D3," says JoAnn Manson, M.D., MPH, DrPH, a ...

7. Vitamin D deficiency - Wikipedia

   en.wikipedia.org/wiki/Vitamin_D_deficiency

   Taking vitamin D supplements has no significant effect on cancer risk. [98] Vitamin D 3, however, appears to decrease the risk of death from cancer but concerns with the quality of the data exist. [99] Nevertheless, studies suggest that Vitamin D deficiency is associated with increased risk of development melanoma. [100]