Law enforcement can be deceived by diabetic symptoms to make them believe the driver is, in fact, intoxicated. If the blood glucose of a diabetic rises above 250 mg/dl, the body becomes incapable of making use of any carbohydrates for energy. In response to this, the body will start to burn ketones (stored fat) to produce energy. Diabetic ketoacidosis will then occur, where symptoms are rapid heartbeat, labored breathing, loss of appetite, thirst, drowsiness, and a flushed face. Another unfortunate reaction during this state: ketones and acetones in the breath will create a distinct bad breath that can easily be mistaken for alcohol. Insulin will speed up the rate that alcohol burns off (or oxidizes) in the body. Because of this fact, any evidence in a DUI case of blood alcohol level projections from the time of arrest is open to doubt.