Who is likely to be deficient in potassium?
So-called primitive diets provided much greater levels of potassium; modern diets may provide too little. Gross deficiencies, however, are rare except in cases of prolonged vomiting, diarrhea, or use of potassium depleting diuretic drugs. People taking one of these drugs should be informed by their doctor to take potassium. Prescription levels of potassium are higher than the amount sold over the counter but not more than the amount found in several pieces of fruit.
