How does hyponatremia develop in persons who do not have adequate food intake?

Updated: Aug 16, 2019
  • Author: Christie P Thomas, MBBS, FRCP, FASN, FAHA; Chief Editor: Vecihi Batuman, MD, FASN  more...
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Answer

This disorder is observed in persons who drink hyponatremic fluids without adequate food intake. The condition is described in individuals who drink beer (beer potomania) and thrive on little else and thus have substantially reduced protein and salt intake. The daily solute intake directly influences the osmotic load to be excreted. With poor nutritional intake, the osmotic load may be as little as 200 mOsm; in this situation, it can be excreted in a maximum of 4 L. Ingestion of a larger quantity of solute-free fluids without other avenues for water loss can result in the development of hyponatremia.


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