The main causes of infertility of men are spermatogenic disorders, dysfunction and immune factors.
1.Extract of semen is too small or sperm, weakened vitality, and abnormal morphology.The reasons that affect sperm are: ① Congenital development abnormalities: Congenital testicular development cannot produce sperm, and bilateral hidden tests cause seizure to prevent sperm occurrence.② Separation: Chronic consumer diseases, such as long -term malnutrition, chronic poisoning (smoking, alcoholism, etc.), excessive mental tension, which may affect sperm production.③ Local factors: Mumps with testiculitis cause testicular atrophy, testicular tuberculosis to destroy testicular tissue, and sperm veins affect sperm quality.
2.Sperm transportation of epididymia and vasters of vasters and tuberculosis can block the vasters and hinder the passage of sperm.Such as, premature ejaculation, ejaculation dysfunction, retrograde ejaculation, urethral cracking, etc., can not enable sperm into women's vagina.
3.Immune factors have antigenicity to their own, but the immune barrier makes the body does not have an immune response to themselves: in the case of the immune barrier of the male reproductive tract, sperm and sperm pulp can produce antibodies against their own sperm in the body.Men's infertility, the sperm that ejaculates has its own condensation and cannot pass through the cervical mucus.
4.Endocrine dysfunction Male endocrine is disordered by the lower hypothalamus-pituitary-testicular axis.Such as low gonad function, hyperthyroidism, androgens, androgen non -sensitive syndrome, hyperteremia, hyperthyroidism, hyperthyroidism, and hyperthyroidism can affect the production of sperm and cause infertility.
5.Sperm function cannot enter female vagina, such as poor genital development, impotence and other difficulty in sexual intercourse.
(Editor in charge: Internship Zhang Yiwen)
