Well, for starters, eating excessive amounts of sugar at one meal, or excessive refined carbohydrate, which is rapidly digested into sugar, can suddenly overwhelm the liver's normal control of arteris plus. But this small list of foods that are bad for your blood sugar is here for you. Try to avoid eggs, whole milk products and red meat as they are likely to cause your blood glucose to peak. Next, the lack of energy at 3:00 PM is from the same type of lunch you ate.