The exact cause of endometriosis is not yet fully understood, but there are several theories that attempt to explain the development of this condition.
One theory is that during menstruation, menstrual blood containing endometrial cells flows backwards through the fallopian tubes and into the pelvic cavity, where these cells implant and grow in areas outside of the uterus. This is known as retrograde menstruation.
Another theory suggests that endometriosis may result from a problem with the immune system, which fails to recognize and destroy endometrial tissue that has implanted outside of the uterus.
Genetic factors may also play a role in the development of endometriosis. Studies have shown that women with a first-degree relative (mother, sister, or daughter) with endometriosis are more likely to develop the condition themselves.
Other factors that may increase the risk of developing endometriosis include hormonal imbalances, environmental toxins, and lifestyle factors such as diet and exercise. However, more research is needed to fully understand the underlying causes of endometriosis.