A vitamin D deficiency is when your levels fall below 12 nanograms of vitamin D per milliliter of blood, or 30 nanomoles of vitamin D per liter of blood, per the NIH.
Causes Symptoms Diagnosis Prevention Treatment Spotlight on Aging: Vitamin D Deficiency Vitamin D deficiency is most commonly caused by a lack of exposure to sunlight. Some disorders can also cause the deficiency.
Vitamin D is often referred to as the "sunshine vitamin" because it is produced by your body when your skin is exposed to the sun. Since vitamin D helps to keep your bones strong, a deficiency can lead to bone softening and subsequent bone pain and fractures. What Does Vitamin D Have to Do With MS?
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what does low vitamin d mean
