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Does running deplete magnesium?

This question is about Running
Natalie Rizzo, MS, RD, Freelance Writer
There is some evidence that strenuous exercise may increase magnesium losses in sweat and urine by 10-20% [1]. Although the research on magnesium depletion and running is lacking, it can be assumed that high mileage may lead to some magnesium depletion. 
A magnesium intake less than 260 mg/day 220 mg/day for male and female athletes, respectively, may result in a magnesium-deficient status [1]. Evidence suggests that magnesium supplementation or increased dietary intake of magnesium may have beneficial effects on exercise performance in magnesium-deficient individuals. 
Foods high in magnesium
  1. Nielsen FH, Lukaski HC. Update on the relationship between magnesium and exercise. Magnes Res. 2006;19(3):180-189.