Ketone body 2+ suggests that it may be caused by physiological factors such as starvation and fasting, but also can be seen in diseases such as diabetic ketoacidosis. Physiological factors are generally not serious, but disease factors are generally more serious. 1. Physiological factors: high ketones caused by physiological factors may be due to long-term fasting or frequent starvation in daily life, resulting in the body can only consume body fat to supply energy, which leads to high blood ketones. Patients need to adjust their daily diet in time, not excessive dieting, and develop regular eating habits. 2. Pathological factors: pathological factors generally occur in diabetic patients, due to the serious lack of insulin or severe resistance, resulting in peripheral tissues to the use of glucose obstacles; and the fat catabolism enhancement, thus producing ketone bodies, so that the blood ketone increase, the serious cases can occur diabetic ketoacidosis. It is recommended that the patient go to the hospital in time to avoid delaying the condition. Ketone body 2 + situation when necessary, it is recommended to go to the hospital to consult a doctor for judgment.