Many middle-aged men come to the male clinic always have a question, is why the doctor to see their impotence always concern their blood pressure, blood lipids, blood sugar problems, some patients directly said, I am looking at male medicine is not to see cardiovascular disease ah! In fact, the human penis erection is cardiovascular in action! The penis can not be well erect, it means that the penis can be erect blood vessels problems, penile arteries in the indirect or direct stimulation of the expansion of blood filling penis to be able to fill hard! When the various causes of vascular expansion mechanism is impaired, the penis will not be able to erect, so it is likely that before you have problems such as angina, cerebral ischemia, or even cerebral infarction, the penis can not be erected properly has begun to predict: your blood vessels have been aging!