What destroys potassium?

High levels of sodium in a diet can cause your potassium levels to lower. Water pills can also cause the same reaction. Also, Diabetes, Cushing's syndrome, excessive excretion of the aldosterone hormone, chronic diarrhea, persistent vomiting, influenza, inflammatory bowel disease, anemia, ulcerative colitis, kidney disease, Heart disease, chronic respiratory failure, prolonged fasting, starvation, bizarre diets, eating disorders like bulimia, and anorexia nervosa, Alcoholism and cystic fibrosis can all deplete potassium.