Endometriosis is a disease that affects the female reproductive system. It is not a sexually transmitted disease and it is not contagious. However, the definite cause of this illness is still unknown.

There are many theories, however, that explain possible causes. These next few theories are just a few that researchers have been looking at. Endometriosis is still an illness that still has no rhyme or reason as to why some woman find themselves suffering.

Following are seven possible causes of endometriosis:

Theory 1: Backflow of menstrual discharge

When women have their period, it could be possible that sometimes blood tissue from the uterus will find its way out through the fallopian tubes. It then makes its way into the abdominal cavity. This means that cells from the uterus make their way into the pelvis. This allows endometrial tissue to grow outside the uterus. However, this theory is hard to prove because it does not explain why endometriosis develops in those who do not have a uterus.

Theory 2: Abnormal change in the nature of a tissue

This idea states that sometimes cells outside of the uterus can change and become the same exact cells that line the uterus. This explanation is common for findings of endometriosis at unusual sites.

Theory 3: Lymphatic or hematologic spread

This theory contends that cells from the lining of the uterus travel through the blood vessels. They then reach other organs or areas of the body. You also need to remember that endometriosis can spread during surgery.

Theory 4: Genetics

This one strikes home for me, since all three of my aunts had endometriosis. Endometriosis tends to be much more common if a close relative also has it. There is a possibility that genes can have some bearing on endometriosis. It is important to remember that even if a family member does not have endo, it does not mean that you do not.

Theory 5: Problems with the immune system

Having a weak immune system can lead to endometriosis. A weak immune system can prevent the destruction of endometrial tissue.

Theory 6: Environmental influences

This includes toxins in the environment. This may have an effect on the immune system, leading to endometriosis.

Theory 7: Hormones

Endometriosis can be stirred up by estrogen.

You can follow more of my journey at: http://www.myendojourney.org

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Note: Endometriosis News is strictly a news and information website about the disease. It does not provide medical advice, diagnosis, or treatment. This content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website. The opinions expressed in this column are not those of Endometriosis News or its parent company, BioNews Services, and are intended to spark discussion about issues pertaining to endometriosis.