i cannot find any research to show that low carbohydrate diets increase potassium levels. in fact low carbohydrate diets tend to be low in potassium since it is found in plant foods including potatoes fruits and vegetables. for more on source of potassium see this article. but potassium is also an electrolyte that can increase or decrease due to medical problems such as kidney and heart failure that aren't necessarily related to dietary intake. for the person with kidney damage (called renal failure) not yet on dialysis high protein is not recommended. if you are concerned about your potassium levels see your healthcare provider to see if something else is going on.
low carb diet cause high pottasium?