hyponatremia in older people high and low potium in elderly s causes of hyponatremia in elderly hyperkalemia symptoms treatment overview low potium symptoms causes how to low sodium symptoms what are the early low potium levels in seniors low blood sodium levels could impact hyponatremia causes symptoms 5 sodium and potium what we need to what causes low potium how to treat what does potium do for your body a how to increase sodium levels rela