Evenly split
The causes can be feminine (30%), masculine (30%), mixed (30%) or idiopathic (without cause identified by the common methods) (about 10% of the situations).
Causes of female infertility:
1- Woman’s advanced age, which is associated with the decrease of the ovarian reserve
2- Ovulation disorders
3- Tubal factor (tubal permeability compromised or nonexistent)
4- Endometriosis
5- Uterine factors: uterine fibroids, endometrial polyps, hyperplasia and endometrial hypoplasia
6- Malformations of the female genital tract
7- Genetic modifications
8- Autoimmune diseases, among others