Women's Health

Information, Symptoms, Treatments and Resources


Endometriosis: Get the Facts

What is Endometriosis?

What is Endometriosis?

During your menstrual period, estrogen levels increase and you produce extra endometrial cells that multiply and thicken the lining of your uterus to prepare for your egg to pass through. Normally, these healthy cells detach from your uterine lining and leave your body during menstruation. But sometimes endometrial cells grow outside the uterus — where they don't belong — on other nearby organs around your pelvis like your ovaries, fallopian tubes or bladder.

By Daniel Halperin, published March 29, 2011. Daniel is a freelance writer based in New York City.