Why do I have low calcium?

low-calcium-abloomnova.net_-1600x1067 Why do I have low calcium?

If you’re concerned about low levels of calcium in your bloodstream, it can easily be checked with a visit to the doctors. A simple blood test will work out the calcium levels in your blood serum, and treatment is normally very simple, with a few hours in an out-patients ward with an intravenous drip. But what causes it? There are many reasons for having a low blood calcium level. Some of the causes include the following:

  • Eating disorders
  • Prolonged vomiting (e.g. with a viral illness)
  • Exposure to mercury, including infantile acrodynia
  • Excessive dietary magnesium, as with supplementation.[citation needed]
  • Excessive dietary zinc, as with supplementation (causes rapid hypocalcemia).
  • Prolonged use of medications/laxatives containing magnesium
  • Chelation therapy for metal exposure, particularly EDTA
  • Osteoporosis treatment or preventive agents, such as bisphosphonates and denosumab.
  • Agents for the treatment of hypercalcemia, such as Calcitonin.
  • Chronic kidney failure
  • Absent active vitamin D
  • Decreased dietary intake
  • Decreased sun exposure
  • Defective Vitamin D metabolism
  • Anticonvulsant therapy
  • Vitamin-D dependent rickets, type I
  • Ineffective active vitamin D
  • Intestinal malabsorption
  • Vitamin-D dependent rickets, type II
  • Pseudohypoparathyroidism
  • Severe acute hyperphosphataemia
  • Tumour lysis syndrome
  • Acute kidney failure
  • Rhabdomyolysis (initial stage)
  • Exposure to hydrofluoric acid
  • As a complication of pancreatitis
  • Alkalosis, often caused by hyperventilation
  • As blood plasma hydrogen ion concentration decreases, caused by respiratory or metabolic alkalosis, the concentration of freely ionized calcium, the biologically active component of blood calcium, decreases. Because a portion of both hydrogen ions and calcium are bound to serum albumin, when blood becomes alkalotic, the bound hydrogen ions dissociate from albumin, freeing up the albumin to bind with more calcium and thereby decreasing the freely ionized portion of total serum calcium. For every 0.1 increase in pH, ionized calcium decreases by about 0.05 mmol/L. This hypocalcaemia related to alkalosis is partially responsible for the cerebral vasoconstriction that causes the lightheadedness, fainting, and paraesthesia often seen with hyperventilation.
  • Tetany may also be seen with this condition.
  • Neonatal hypocalcemia
  • Very low birth weight (less than 1500 grams)
  • Gestational age less than 32 weeks

 

 

 

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