Mashed potatoes really are a "comfort" food. Your body almost instantly converts them into pure glucose. You feel all warm and "comfy" because your blood glucose has just gone through the roof. Of course, you body responds by releasing a mother load of insulin. Then your blood glucose crashes through the floor. Do this enough times and your body cells may very well become "insulin resistant". You are now a type II diabetic. We, in the western world are experiencing a diabetes epidemic. It is caused by diet. Think the human body was designed to handle the 175 pounds of refined Sugar the average American consumes every year? Consider candida a mere warning shot across your bow.