Hypocalcemia,or deficient levels of calcium in the blood,can be caused by overdoses of cholecalciferol or excessive amounts of vitamin D preparations.Hypocalcemia results in tetany,a neuromuscular disorder.

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The first statement is false; the second is true.Hypocalcemia is not caused by cholecalciferol.Depressed serum calcium levels (hypocalcemia)may be caused by hypoparathyroidism,some bone diseases,certain kidney diseases,and low serum protein levels.It is true that hypoglycemia results in tetany,a neuromuscular disorder of uncontrollable cramps and tremors involving the muscles of the face,hands,feet,and eventually the heart.Note that overdoses of cholecalciferol,vitamin D₃,can cause hypercalcemia.

Hypocalcemia,or Deficient Levels of Calcium in the Blood,can Be Caused