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May7-04, 05:56 PM
Sci Advisor
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Moonbear's Avatar
P: 12,270
Well, I'm glad someone else answered that question, because I didn't know the answer myself. All I know related to potassium and high blood pressure is that for those taking diuretics to treat hypertension, a side effect is depletion of potassium, so those patients are recommended to take potassium supplements or eat foods high in potassium. Too low of potassium can result in a lot of problems due to nervous system malfunction (that's why there is an increased risk of ventricular arrhythmia with potassium deficiency...poor conductance across the heart to keep everything synchronized).

I'm not sure if there's a reason for water to preferentially move toward sodium vs potassium, and I think it's the latter explantion of total ion concentration on each side of a membrane determining which way the water goes.