Hypophosphatemia is a low level of phosphorus in the blood.


Various conditions may cause hypophosphatemia, including:

  • Alcoholism
  • Starvation
  • Vitamin D deficiency


  • Anemia due to excess destruction of red blood cells (hemolytic anemia)
  • Confusion
  • Heart muscle damage (cardiomyopathy)
  • Muscle weakness


Treating the cause of hypophosphatemia is needed to correct the phosphorous deficiency. Phosphate can be given by mouth or through a vein.

Outlook (Prognosis)

The outlook depends on the disease causing the condition.

When to Contact a Medical Professional

Call your health care provider if you have muscle weakness or confusion.

Alternative Names

Low blood phosphate; Phosphate - low