EDEMA (FLUID RETENTION) The most likely cause is Low Potassium Explanation: This could be caused by dysfunctions in four different organs/glands: 1. Liver 2. Kidney 3. Heart 4. Adrenals A lack of potassium can also cause edema. We normally need lots of potassium in our diet (4700 mg), which is equal to 7-10 cups of vegetables per day. In fact, we need 4x more potassium than sodium. Most diets reverse that and take in four times as much sodium as potassium. This reversal would keep the blood pres