There are many causes of male infertility, male without azoospermia. Although now are on the rise in the level of people's knowledge, but knowledge of the disease but no more understanding, and for sperm class knowledge of the disease and even less. While recognizing that a lot of male friends male infertility serious, but do not know the reasons for the formation of azoospermia do not know how to make effective preventive measures. Below please the Dongguan male to tell everyone azoospermia formation What are the reasons? Medical azoospermia can be divided into two categories, the first category is spermatogenic dysfunction, sperm can not produce, also known as true azoospermia . The second category is spermatogenesis is normal, but the vas deferens obstruction, sperm can not be eliminated from the body, also known as obstructive azoospermia. Spermatogenesis obstacles to major oil several diseases caused by: (1) genetic disorders: autosomal or sex chromosome abnormalities affect the testicles to produce sperm, such as Klinefelter (Klinefelter) syndrome. (2) congenital testicular abnormalities: abnormal testicular development or abnormal testicular position were barriers to sperm production can. (3) the testicle itself lesions: such as testicular trauma, inflammation, torsion and testicular vascular lesions. (4), endocrine disorders, pituitary hyperthyroidism or low, pituitary tumor, adrenal hyperfunction or low, hyperthyroidism or hypothyroidism can affect sperm production and cause azoospermia. (5) serious systemic disease and malnutrition can cause azoospermia. (6) Radiation damage and drugs, especially cytotoxic drugs, spermatogenic cell damage, and in severe cases can cause azoospermia. Obstructive azoospermia: patients with secondary sexual characteristics, libido, sexual function is normal, normal testicular development, sperm production, but the vas deferens obstruction without sperm discharge. Causes include: ① congenital malformations, common epididymal head ectopic epididymal duct atresia of the vas deferens or not developed; ② infection, Neisseria gonorrhoeae, Mycobacterium tuberculosis and other bacterial infections can cause the epididymis and vas deferens obstruction; ③ epididymis at the cyst oppression epididymal duct causing obstruction; ④ damage to the vas deferens obstruction. The above is introduced azoospermia reasons, I hope you male friends prevention and treatment of azoospermia be helpful. Dongguan Male Hospital to remind the majority of male friends must pay attention to in their daily lives azoospermia prevention, maintaining good habits in their daily lives, do not often through the tight jeans, the use of computers and mobile phones have far from testicular, usually Eat more foods that are conducive to sperm. If it is found that the sperm abnormalities, should when to the regular hospital for examination and treatment. Tips: to promote exchanges and cooperation with developed medical areas Dongguan Men better understand and master the News of the male subjects at home and abroad, and to promote development of Dongguan male clinics, scientific, standardized and efficient clinic better to the masses Nankejibing patients China Men's Professional Committee specially set up in Dongguan the first Nankejibing Institute http://www.dfmnyy.com/. It is reported, Dongguan Institute of Oriental Nankejibing, is the first Andrology Institute of Guangdong and even nationwide, will focus on the male prostate disease, sexual dysfunction, male reproductive infertility and other difficult diseases clinical research, preventive health care, rehabilitation therapy, promotion of academic exchanges, and of Andrology new technology.