What is the incidence of hypomagnesemia in the US?

Updated: Oct 30, 2020
  • Author: Tibor Fulop, MD, PhD, FACP, FASN; Chief Editor: Vecihi Batuman, MD, FASN  more...
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Although the incidence of hypomagnesemia in the general population has been estimated at less than 2%, some studies have estimated that 75% of Americans do not meet the recommended dietary allowance of magnesium. [111]

In a Mayo Clinic review, magnesium levels of less than 1.7 mg/dL were noted in 13,320 of 65,974 hospitalized adult patients (20.2%). Hypomagnesemia was common in patients with hematologic/oncological disorders. [112]

The risk of hypomagnesemia can be summarized as follows:

  • 2% in the general population
  • 0-20% in hospitalized patients
  • 50-60% in intensive care unit (ICU) patients
  • 30-80% in persons with alcoholism
  • 25% in outpatients with diabetes

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