Erectile dysfunction, commonly known as “impotence”, refers to the inability of the penis to get an erection or a weak erection when there is a sexual desire, or although there is an erection and a certain degree of hardness, but can not maintain sexual intercourse for a sufficient time, thus preventing sexual intercourse or can not complete sexual intercourse. There are two kinds of impotence: congenital and pathological. The former is uncommon and not easily cured; the latter is common and has a high cure rate. In the United States, the incidence of impotence in the general population was 8% in adult men, and in China it was estimated to be about 10%. Impotence is a condition in which a man has sexual desire, but his penis cannot get an erection or can get an erection but is not hard enough to have sexual intercourse. If the penis cannot be erected at all, it is called complete impotence, and if the penis can be erected but does not have sufficient hardness for sexual intercourse, it is called incomplete impotence. The main characteristics of impotence patients: 1, the penis can not fully erect or erection is not firm, so that can not successfully carry out normal sex life. 2. Young people experience anxiety and impatience with impotence due to inadequate emotional communication with sexual partners or inconsistent sexual habits. 3, Occasional occurrence of impotence, in the next sex completely normal, may be a momentary tension or exertion, not a pathology. 4. Although impotence occurs frequently, the penis can be erected in the early morning or during masturbation and can be maintained for a period of time, which is mostly caused by psychological factors. 5.Impotence persists and progresses, mostly caused by organic lesions. The main factors that cause impotence: 1. Endocrine lesions. The endocrine system of the human body regulates and controls the whole body, and when it is affected by lesions, some functions are bound to be abnormal. Under the influence of diabetes or pituitary insufficiency, the testes are damaged to varying degrees and are therefore prone to impotence. 2. Systemic diseases. It should be noted that this is also a cause of impotence disease, under the influence of some diseases, male sexual function will be affected, especially the impact of hormonal diseases, in life should actively prevent such diseases. 3, age factor. With the growth of age, the male body condition will appear to reduce the situation, its sexual ability will also appear low, it is easy to appear impotence disease, so in the age of growth at the same time, need to add more nutrients, you can eat more essence of kidney food. 4, genitourinary organ lesions. The male genitourinary organs, when abnormal, will also affect its sexual function to a certain extent, appearing impotence abnormal symptoms, common prostate inflammation and varicocele, etc., at this time to actively treat these diseases to avoid more harm.