The main factors that lead to male infertility are the following:
1. Ethical semen abnormalities: If there is no sperm or the number of sperm is too small, the activity is weakened, and the shape is abnormal.
2. Abnormal testicles: There are three cases of testicular abnormalities: 1) Cultivation tests, about 30%to 60%of the infertility caused by unilateral cuddle tests, and 50%to 100%on both sides.Not only leads to infertility, but it can also induce malignant changes; 2) The fetal period is damaged due to adverse environmental factors; 3) early testicular injuries, which can be caused by domestic injuries during childbirth.
3. Testes are damaged after testicular: such as hernia repair, sheath effusion surgery, testicular fixing surgery, etc., damage the testicular blood vessels, hindering the blood supply and the testicular atrophy.
4. Sperm transportation is blocked: The tuberculosis of epididymia and the voltic tube can block the vollarization tube, hinder the passage of sperm, and premature ejaculation cannot enter the female vagina.
5. Hypsychological effusion: The sheath effusion compress the testicular blood circulation, which can cause testicular infection or atrophy.The incidence of this disease was 16%& mdash; 19%.
6. Endocrine factors: Men's endocrine is subject to the hypothalamus-pituitary-testicular axis axishaxial, thyroid, and adrenaline dysfunction, which can cause infertility.
7. Genetic factors: KLINEFELTER syndrome, male Turner syndrome, etc. with abnormal chromosomes.
8. Immune factors: Because sperm is exposed to the immune system, sperm pulp produces antibodies against sperm in the body. The sperm that ejaculates itself has its own condensation and cannot conceive women.
9. Reproductive organs infection: Bacteria, viruses, raw insects and other infections can directly damage the testicular, leading to testicular atrophy, testicular tuberculosis, destroying testicular tissue, seriously affecting sperm ability and reducing sperm activity and leading to infertility.For example, 20%of mumps in the early stage of youth development cause infertility.
10. Infertility caused by neurological dysfunction and neurological diseases: such as paraplegia and impotence.
