What are the reasons why women can't have children?

The reasons are as follows: 1. Vaginal factors: Sexual intercourse disorder or difficulty caused by congenital factors such as vaginal atresia or vaginal septum, which affects sperm entering female reproductive tract. Vaginal inflammation caused by mold, trichomonas, gonococcus and other infections changes the biochemical environment of vagina and reduces the motility and vitality of sperm, thus affecting the chances of pregnancy. 2, cervical factors: cervical stenosis, polyps, tumors, adhesion and so on. Can affect sperm passage; Cervical erosion, its inflammatory exudate has spermicidal effect; The existence of anti-sperm antibody in cervical mucus is not conducive to sperm penetration into cervical canal or complete loss of sperm mobility. It is worth noting that cervical adhesion caused by induced abortion of unmarried pregnant women is more likely to cause this serious complication, especially in repeated abortion, which keeps sperm out of the cervix. Congenital abnormality of cervical canal is often accompanied by abnormal menstruation or dysmenorrhea, and girls will go to the hospital for examination after menarche. 3. Uterine factors: Congenital hypoplasia, baby uterus and solid uterus without uterine cavity will all affect women's fertility. Uterine retroflexion or severe retroflexion, endometrial inflammation and intrauterine adhesions are all causes of infertility. Uterine leiomyoma is the most common benign tumor in women, and the infertility rate of patients with uterine leiomyoma can reach 30-40%, which is much higher than that of the general population. 4, fallopian tube factors: fallopian tube is too long or narrow, tubal inflammation causes lumen occlusion, water accumulation or adhesion, which will hinder the operation of sperm, eggs or fertilized eggs. Tubal diseases can account for 25% of female infertility, which is an important cause of infertility. Inflammatory diseases include tuberculosis, endometriosis, trichomoniasis, gonorrhea and other pathogenic infections. Blocked fallopian tubes can be recanalized by liquid drainage and microsurgical plastic surgery, and patients can also get pregnant opportunities through in vitro fertilization and embryo transfer. 5, ovarian factors: ovarian follicle hypoplasia, failure to ovulate to form corpus luteum, premature ovarian failure, polycystic ovary, ovarian tumor and other factors that affect follicular development or egg excretion will cause infertility. 6. Endocrine factors: when the hypothalamus is immature or the central maturation of hypothalamus cycle is delayed, the adjustment between hypothalamus-pituitary-ovary axis is not perfect, so it shows anovulatory menstruation, amenorrhea or corpus luteum insufficiency, which are all possible reasons for infertility. 7. Congenital factors: Congenital hypoplasia of reproductive system is serious, and such patients are often accompanied by primary amenorrhea. Sex chromosome abnormalities, such as Turner syndrome, true and false hermaphroditism. Habitual abortion caused by chromosome abnormality, etc. 8. Systemic factors: nutritional disorders, metabolic diseases, chronic wasting diseases, simple obesity, etc. Physical factors such as taking raw cottonseed oil, toxic chemical reagents, radiation exposure, microwave, etc. 9. Psychoneurological factors: autonomic nervous system dysfunction, psychosis, environmental amenorrhea, anorexia nervosa, pseudopregnancy, etc.