Hyperestrogenic refers to an excess of estrogen in the body, which can cause a variety of health problems. There are several synonyms for this term, including estrogen dominance, estrogen excess, and estrogenic overload. Other related terms include estrogenic activity, which refers to the ability of a substance to affect estrogen levels in the body, and estrogenic stimulation, which describes the effect of estrogen on certain tissues or organs. Too much estrogen can lead to a range of symptoms, including menstrual irregularities, weight gain, mood changes, and an increased risk of certain cancers. It is important to talk to a healthcare provider if one suspects they have a hormonal imbalance.