What is it?

Normal magnesium levels in the blood range from 1.7-2.3 mg/dL This balance is kept thanks to the kidney.
Hypermagnesemia, or high level of magnesium in the blood, is a rare condition and is usually linked to renal failure. Other causes may include lithium therapy, hypothyroidism, Addison’s disease, milk-alkali syndrome, drugs containing magnesium and familial hypocalciuric hypercalcemia.
Hypomagnesemia, or low magnesium levels, is usually caused due to decreased absorption of magnesium from the digestive tract or increased excretion in the urine. Hypomagnesemia is rare in healthy people and is seen more in people with kidney problems or hospitalized people. Other risk factors include diabetes, gastrointestinal problems, older age, use of loop diuretics, chemotherapy and alcohol dependence.