However, it's not clear which came first; people in pain may get less sun (presumably because they may be more likely to stay inside, due to pain), which could lead to a vitamin D deficiency, rather than vice versa a vitamin D deficiency leading to pain.

What we measured justifies screening for [vitamin D deficiency].

Hypocalcemia - due to 1,25 dihydroxyvitamin D deficiency.

Once formed, Vitamin D3 is metabolized in the liver to 25-hydroxy Vitamin D, and then in the kidney to its biologically active form, 1,25(OH)(2)D. "Vitamin D deficiency is an unrecognized epidemic among both children and adults in the United States.

But he said that the researchers could not control for things like prior nutritional status, vitamin D deficiency or smoking history, all of them factors suspected of affecting susceptibility to tuberculosis.

Plasma zinc levels have been found to be dependent upon vitamins A and D. This suggests that a Vitamin A or D deficiency could cause a secondary zinc deficiency and that for treatment of zinc deficiency one should ensure adequate vitamin A and D intake.

Vitamin D deficiency.

You have a vitamin D deficit Today's healthy desire to avoid sun dam-age has created an epidemic of D deficiency, says Annabelle Volgman, MD, a cardiologist and medical director of the Heart Center for Women at Rush University Medical Center in Chicago.