What causes vitamin D deficiency?

Updated: Aug 08, 2019
  • Author: Manish Suneja, MD, FASN, FACP; Chief Editor: Vecihi Batuman, MD, FASN  more...
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Answer

Vitamin D is a necessary cofactor for the normal response to PTH, and vitamin D deficiency renders PTH ineffective. Poor nutritional intake, chronic renal insufficiency, or reduced exposure to sunlight may cause vitamin D deficiency.


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