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Vitamin D toxicity, or hypervitaminosis D, is the toxic state of an excess of vitamin D.The normal range for blood concentration of 25-hydroxyvitamin D in adults is 20 to 50 nanograms per milliliter (ng/mL).
Vitamin D is a group of ... 427 The normal range for blood concentration of 25-hydroxyvitamin D in adults is 20 to 50 nanograms per milliliter (ng/mL; equivalant to ...
Vitamin D deficiency or hypovitaminosis D is a vitamin D level that is below normal. ... (OH)D less than 20 ng/mL: Ginde et al. 2009 [87] 6% 25(OH)D less than 10 ng/mL:
A broad reference range of 20 to 150 nmol/L (8-60 ng/mL) has also been suggested, [16] while other studies have defined levels below 80 nmol/L (32 ng/mL) as indicative of vitamin D deficiency. [ 17 ] Increasing calcifediol levels up to levels of 80 nmol/L (32 ng/mL) are associated with increasing the fraction of calcium that is absorbed from ...
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In the past, hypovitaminosis D was defined by blood concentrations lower than 20 ng/mL. [6] However, in more recent literature many researchers have considered 30 ng/mL to be an insufficient concentration of vitamin D. [ 6 ] Subnormal levels of vitamin D are usually caused by poor nutrition or a lack of sun exposure. [ 5 ]
Serum concentrations above 50 ng/mL may be cause for concern. Common, most foods do not contain vitamin D, indicating that a deficiency will occur unless people get sunlight exposure or eat manufactured foods purposely fortified with vitamin D. Vitamin D deficiency is a known cause of rickets, and has been linked to numerous other health ...
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