# oestrogen drives endometriosis > The relationship of endometriosis to oestrogen is well-established[[(Troyer, 2007)#^hjlic]] > This disorder is highly estrogen-dependent and the purpose of hormonal treatments is to decrease the endogenous ovarian production of estrogens. High estrogen production is a consistently observed endocrine feature of endometriosis.[[(Chantalat et al., 2020)#^80uq6]]