ED is an acronym for erectile dysfunction, or what we used to call “impotence”. Surveys have shown that the incidence of ED among men between the ages of 40 and 70 is 52%, with more than 100 million people suffering from the disease in China, seriously affecting the physical and mental health of men and the quality of life of the whole family. There are many diseases that cause ED. First of all, ED is a vascular disease that appears 53.4 months earlier than the symptoms of ischemic heart disease. Epidemiological data show that 67% of patients have ED before the onset of heart attack, 45% of hypertensive, 58% of diabetic, 60% of hyperlipidemic male patients suffer from erectile dysfunction. Therefore, erectile dysfunction is often an early warning sign of organic pathologies such as hypertension, diabetes, and heart disease. It is also said that the earliest manifestation of aging in men is ED. Secondly, erection is a neurovascular activity. Diabetes, for example, is due to both damage to the peripheral nerves of the penis and damage to the penile blood vessels, accelerating the production of atherosclerosis, coupled with uncontrolled blood sugar levels. Diabetes is therefore an important cause of erectile dysfunction. Again erection is an endocrine activity. Any disorder that causes a decrease in blood testosterone levels will inevitably impair erectile function. Thus ED is not only a male disorder, but more importantly a vascular, neurological and endocrine disorder. Changes in erectile function often precede hypertension, coronary artery disease, and retinal vasculopathy, and are the earliest manifestations of aging in men. When there is a problem with erectile function, you should visit a male physician early to rule out any organic lesions and give early detection and treatment.