text: <unk>  is defined as urinary magnesium excretion of < 50 mg/day.
  Magnesium is known to be an inhibitor of calcium nephrolithiasis by apparently increasing the solubility product of calcium oxalate and calcium phosphate. This condition may coexist with hypocitraturia in approximately 65% of patients, and low urine volume (< 1 L/d) in approximately 40% of patients.
  Many patients with nephrolithiasis report a limited intake of magnesium-rich foods such as nuts and chocolate, suggesting the dietary basis for this condition.
option_0: Hypomagnesiuria
option_1: Hypercalciuria
option_2: Hyperoxaluria
option_3: Hypermagnesemia
option_4: Cystinuria
option_5: Hypermagnesaemia
option_6: Hypomagnesemia
option_7: Hypophosphatemia