Less refined is a relatively common male infertility disorders. Testicular sperm produced inside, the essence of the song in testicular small tube experience spermatagonial cells, primary pure mother cells, subprime pure mother cells, sperm cells, eventually forming the mature sperm, and release to fine song small tube, is a continuous process, about the small tube experience pure song 64 ~ 72 days. In the whole process of sperm formation were hit by the adjustment of endocrine hormone, any influence factors are born of pure function will result in reduced Numbers of sperm.
1. Varicocele: varicocele, make the local temperature rise testicles, blood vessels increase active material, which affects the testicular born fine function, but varicocele degree proportion and sperm quality.
2. Deliery: cryptorchidism was semen quality effect is one of the important reasons. Unilateral cryptorchidism was about 60% of the sterility, therefore, if the sperm density low, and there exists deliery, must be treated early.
3. Urinary tract infection: subsidiary of Gonad chronic infections, can affect sperm in various assay index.
4. Autoimmune: reproductive immunology found that men were their own immune can affect fertility, antisperm antibody can affect sperm production and shipping.
5. Endocrine exception: male normal life in pure function depend on hypothalamus-pituitary-adrenal axis of the function of normal, among them a link any obstacle, will affect the life of pure function, and other such as thyroid, adrenal disease can also affect ShengShiXian function and the little sperm disease.
6. Chromosome abnormality: chromosome aberration on sperm density, activities and form are serious rate of influence.
7. Other: scrotal temperature is too high, radiation damage, chemical drugs and drug effects were less sperm can cause disease.
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