The causes of infertility, 2 / 3 is the woman’s fallopian tube obstruction is always the main reason, but since the general emphasis on broad-spectrum antibiotics to prevent infection and its inception, causing inflammation of fallopian tube obstruction obstetrics gynecology has been greatly reduced; the other hand, the endocrine disease understanding and examination of technology continues to progress, ovarian dysfunction, infertility due to diagnosis rate has increased, so ovarian infertility also occupies an important position.

   Ovarian factor infertility caused by infertility accounts for about 15% to 25%, ovary, infertility can be caused by several factors:

   â‘  ovarian local factors: such as congenital absence of ovaries or immature-type ovaries, premature ovarian failure, polycystic ovary, some ovarian tumors, such as particles – theca cell tumor, testicular tumors, etc. can affect the mother cells of ovarian hormone secretion and ovulation.

   ② systemic diseases such as severe malnutrition, or a diet lacking certain important nutritional factors, can affect ovarian function Erzhi infertility; chronic diseases, metabolic diseases such as hypothyroidism or hyperthyroidism, diabetes mellitus, adrenal dysfunction were also able to risk of infertility.

   â‘¢ central effects: hypothalamus, pituitary, ovary, between the endocrine imbalance, pituitary tumor or scar may cause ovarian dysfunction, infertility Erzhi; mental factors such as the spirit bear or excessive anxiety, can hypothalamus – pituitary — – ovarian axis suppression impact on ovulation.

In addition to ovarian factors that can cause female infertility, the causes of their location and place can be broadly divided into:

  (1) infertility caused by vaginal factors: the absence of the hymen, vaginal diaphragm, congenital absence of vagina and other congenital malformations, be able to prevent sexual life; Yan vaginal inflammation, a large number of white blood cells can swallow sperm, lower sperm motility, shortening affect the survival time of their pregnancy.

  (2) uterine factor infertility due to: infertility accounts for about 10% to 15%. Forward flexion and normal uterus, cervix backwards, after sexual intercourse cervix soaked in semen is conducive to conception. Such as the uterus after the bend backward, so that cervix to move upward, can affect the pregnancy; due to inadequate secretion of ovarian progesterone, so that endometrial secretion of poor response; uterine hypoplasia, as well as endometrial inflammation such as tuberculosis endometritis, submucosal uterine fibroids, etc. can affect the Yunluan implantation.

  (3) infertility caused by cervical factors: It is the more important reason for infertility, infertility accounts for about 10% to 20%. Ovulation cervical opening its mouth, from menstruation to open after the 1mm diameter ranging from 3mm, an increase in cervical mucus during ovulation, clean and transparent, pH value of 7.0 ~ 8.2 can be and in the acidity of the vagina is conducive to sperm activity and through . Due to chronic cervicitis or low estrogen levels, a variable viscous cervical mucus, or contains a large number of white blood cells, is not conducive to the activities of sperm and adoption can affect pregnancy. In addition, cervical polyps or cervical fibroids can block the cervix tube, affecting the passage of sperm, cervical stenosis may also cause infertility.

(4), tubal factor of infertility: tubal adhesions caused by inflammation of fallopian tube obstruction, impeding the egg and sperm meet Erzhi infertility. Pelvic endometriosis can also cause infertility and tubal adhesions distortions.

(5) Other factors: The system checks, there are still about 10% of both men and women were not found in obvious reasons for infertility. In recent years, that and immune factors. In some infertile women’s serum found to contain anti-sperm antibodies, such antibodies with sperm agglutination reaction can occur, these infertile couples, such as using condoms, birth control for some time, make these antibodies disappear pregnancy. Others such as spouses and blood type did not, while others believe it could be the reasons for infertility. Sex chromosome aberrations such as karyotype 45XXO or 46XXP-or chimera, and sometimes the patient looks normal, but ovarian hypoplasia, anovulation, or amenorrhea, multi-seeking treatment for infertility.