Does endometriosis affect egg quality or implantation?

Endometriosis can affect both egg quality and implantation—fertility impacts aren’t limited to just one step. In the ovaries, endometriosis (especially ovarian endometriomas and the inflammation they create) may interfere with ovulation and the environment where eggs mature, which can contribute to lower oocyte competence for some patients.

At the same time, endometriosis can also change the uterine lining in ways that may reduce implantation receptivity, even when tubes look open and imaging seems “normal.” It may also disrupt pelvic anatomy and fallopian tube function through inflammation, adhesions, and altered contractions—affecting pickup and transport of the egg or embryo. If you’re trying to make sense of your own situation, our team can help map your symptoms, imaging, and fertility history to the most likely mechanisms and discuss options like excision surgery and coordinated fertility planning.