Belated answer: same reason many people have a magnesium deficiency. These are both minerals whose presence in food is highly dependent on their presence in soil. Soil depletion = far less potassium and magnesium in our diets.
Belated answer: same reason many people have a magnesium deficiency. These are both minerals whose presence in food is highly dependent on their presence in soil. Soil depletion = far less potassium and magnesium in our diets.