Why foods high in potassium can be harmful to people suffering from kidney disease

 Foods high in potassium can be harmful for people with kidney disease because the kidneys can't filter out the excess potassium.The buildup of potassium is called hyperkalemia.

            Kidneys normally filter excess potassium from the blood into urine.High potassium levels can cause irregular heartbeats and in some cases ,cardiac death.

            Bananas,potatoes,oranges,avocados and spinach are high in potassium.