"Unopposed estrogen" refers to a medical condition where a person's body experiences a higher level of estrogen hormone without any kind of balancing or opposing hormone present. Full definition
The primary causes of estrogen dominance are adrenal fatigue, excessive environmental estrogen, obesity, stress, poor diet, lack of exercise, and unopposed estrogen given as part of a hormone replacement therapy. (myersdetox.com)
While unopposed estrogen significantly increases proliferation of the breast cells, progesterone can compensate this effect. (outsmartdisease.com)
Unopposed estrogen creates a strong risk for breast cancer and reproductive cancers. (johnleemd.com)