Endometriosis occurs among women all over the world, but researchers have been unable to determine its cause. A combination of genetic, biologic, and environmental factors may work together to trigger the initial process, produce implantation, and cause subsequent reseeding and spreading of the implants.
Theories of the cause of endometriosis include:
Retrograde Menstruation. Retrograde menstruation occurs during a woman's period, when menstrual tissue flows backward through the fallopian...Read more