<unk> , or estrogen deficiency, refers to a lower than normal level of estrogen. It is an umbrella term used to describe estrogen deficiency in various conditions. Estrogen deficiency is also associated with an increased risk of cardiovascular disease, and has been linked to diseases like urinary tract infections and osteoporosis. In women, low levels of estrogen may cause symptoms such as hot flashes, sleeping disturbances, decreased bone health, and changes in the genitourinary system.<unk>  is most commonly found in women who are postmenopausal, have primary ovarian insufficiency (POI), or are presenting with amenorrhea (absence of menstrual periods).<unk>  includes primarily genitourinary effects, including thinning of the vaginal tissue layers and an increase in vaginal pH. With normal levels of estrogen, the environment of the vagina is protected against inflammation, infections, and sexually transmitted infections.<unk>  can also occur in men, for instance due to hypogonadism. There are both hormonal and non-hormonal treatments to prevent the negative effects of low estrogen levels and improve quality of life.
Hypoestrogenism
Hyperestrogenism
Antiestrogen withdrawal response
Corticosteroid-induced lipodystrophy
Hyperandrogenism
Androgen deficiency
Thyroid hormone resistance
Progestin-induced virilization