What are the causes of infertility?

InfertilityWhat are the reasons?

Causes of infertility may develop due to problems arising from women, men or both. In order for a normal pregnancy to occur, after a normal intercourse, the sperm must be able to enter the uterus from the cervix, reach the ovaries by passing through the tubes, and have the capacity to fertilize the egg. In addition, the woman must have a suitable uterus in order to ovulate, her tubes to be suitable for sperm passage, and for the fertilized egg (embryo) to adhere.

How does ovulation, fertilization with sperm and adhesion to the uterus occur in women? Click to watch.

Pathways that sperm must go through to fertilize the egg

InfertilityDistribution of causes of infertility in couples with complaints

Male Factor 25–40%
Male-Female Factor Together 10%
Female Factor 40-55%
Unexplained Infertility 10%

InfertilityCauses of infertility in cases where the cause belongs to the woman

Male Factor 25–40%
Male-Female Factor Together 10%
Female Factor 40-55%
Unexplained Infertility 10%

InfertilityReasons:

1. Male problems
2. Decreased ovarian reserve
3. Ovulation problems
4. Tube problems
a. Tube damage
b. Blockage
c. Adhesions around the tube

5. Uterine problems (congenital defects or acquired problems)
6. Systemic problems
a. Chronic kidney failure etc.
b. Chronic liver diseases etc.
7. Cervical problems and immune system problems
8. Unexplained causes

Click here for a detailed analysis of the reasons for the woman.

Click here for a detailed analysis of the reasons for the man.

Despite all research, no cause is found in approximately 30% of couples (about 1 in 3 couples) and this is called unexplained infertility. However, with the developments in medicine, the proportion of patients in this group will decrease.

For detailed information on unexplained infertility, click here.

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