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  2. 10 Best Vitamin D Supplements, According to Dietitians - AOL

    www.aol.com/10-best-vitamin-d-supplements...

    Each of these high-potency softgels delivers 5,000 IU of vitamin D3, making them a fantastic option for those looking to boost their vitamin D levels significantly. "With 125 percent of the ...

  3. Vitamin D deficiency - Wikipedia

    en.wikipedia.org/wiki/Vitamin_D_deficiency

    Vitamin D deficiency is typically diagnosed by measuring the concentration of the 25-hydroxyvitamin D in the blood, which is the most accurate measure of stores of vitamin D in the body. [1][7][2] One nanogram per millilitre (1 ng/mL) is equivalent to 2.5 nanomoles per litre (2.5 nmol/L). Severe deficiency: <12 ng/mL = <30 nmol/L[2] Deficiency ...

  4. The Exact Time To Take Vitamin D For Optimal Benefits - AOL

    www.aol.com/heres-why-experts-suggest-taking...

    Orange Vitamin D3. Rated at 4.7 stars by over 6,000 happy customers on Amazon, this daily vitamin is a tried-and-true product that's affordable and even offers a refreshing orange flavor.

  5. Have You Been Taking Your Vitamin D the Right Way? - AOL

    www.aol.com/exact-time-vitamin-d-140000773.html

    The best vitamin D supplements. Both vitamin D2 and D3 are good, but “D3 has better bioavailablilty,” says Dr. Manson, meaning that it’s more easily used by your body.

  6. Vitamin D - Wikipedia

    en.wikipedia.org/wiki/Vitamin_D

    Vitamin D 5. sitocalciferol. (made from 7-dehydrositosterol) Several forms (vitamers) of vitamin D exist, with the two major forms being vitamin D 2 or ergocalciferol, and vitamin D 3 or cholecalciferol. [ 1 ] The term 'vitamin D' refers to either D 2 or D 3, or both, and is known collectively as calciferol.

  7. 25-Hydroxyvitamin D 1-alpha-hydroxylase - Wikipedia

    en.wikipedia.org/wiki/25-Hydroxyvitamin_D_1...

    proteins. 25-Hydroxyvitamin D 1-alpha-hydroxylase (VD 1A hydroxylase) also known as calcidiol 1-monooxygenase [5] or cytochrome p450 27B1 (CYP27B1) or simply 1-alpha-hydroxylase is a cytochrome P450 enzyme that in humans is encoded by the CYP27B1 gene. [6][7][8] VD 1A hydroxylase is located in the proximal tubule of the kidney and a variety of ...

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