Estrogen (British English: oestrogen; see spelling differences) is a category of sex hormone responsible for the development and regulation of the female...

An estrogen (E) is a type of medication which is used most commonly in hormonal birth control and menopausal hormone therapy, and as part of feminizing...

Estrogen receptors (ERs) are proteins found in cells that function as receptors for the hormone estrogen (17β-estradiol). There are two main classes of...

caused by low levels of female sex hormones (e.g. estrogens) that occur during menopause. Estrogens and progestogens are the main hormone drugs used in...

Antiestrogens, also known as estrogen antagonists or estrogen blockers, are a class of drugs which prevent estrogens like estradiol from mediating their...

Selective estrogen receptor modulators (SERMs), also known as estrogen receptor agonists/antagonists (ERAAs), are a class of drugs that act on estrogen receptors...

Conjugated estrogens (CEs), or conjugated equine estrogens (CEEs), sold under the brand name Premarin among others, is an estrogen medication which is...

the growth of breast tissue as a result of a hormone imbalance between estrogens and androgens. Gynecomastia can cause significant psychological distress...

An estrogen patch, or oestrogen patch, is a transdermal delivery system for estrogens such as estradiol and ethinylestradiol which can be used in menopausal...

Estradiol (E2), also called oestrogen, oestradiol, is an estrogen steroid hormone and the major female sex hormone. It is involved in the regulation of...

Estrogen dominance (ED) is a theory about a metabolic state where the level of estrogen outweighs the level of progesterone in the body. This is said...

Vaginal estrogen is a form of estrogen that is delivered by intravaginal administration. Vaginally administered estrogens are thereby exerting their effects...

production of estrogen or block the action of estrogen on receptors. In contrast to premenopausal women, in whom most of the estrogen is produced in...

Membrane estrogen receptors (mERs) are a group of receptors which bind estrogen. Unlike nuclear estrogen receptors, which mediate their effects via slower...

Xenoestrogens are a type of xenohormone that imitates estrogen. They can be either synthetic or natural chemical compounds. Synthetic xenoestrogens include...

estradiol is an endogenous estrogen hormone produced within the body, whereas ethinylestradiol is an exogenous synthetic estrogen, commonly used in birth...

Estrogen receptor alpha (ERα), also known as NR3A1 (nuclear receptor subfamily 3, group A, member 1), is one of two main types of estrogen receptor, a...

is inflammation of the vagina as a result of tissue thinning due to low estrogen levels. Symptoms may include pain with sex, vaginal itchiness or dryness...

by estrogen. This hormone activates the development of breast throughout puberty, menstrual cycles and pregnancy. The imbalance between estrogen and...

by changes to hormone levels, such as an increase in progesterone and estrogen levels, decrease in gonadotropins such as follicle-stimulating hormone...

Tamoxifen, sold under the brand name Nolvadex among others, is a selective estrogen receptor modulator used to prevent breast cancer in women and men. It is...

abnormal estrogen levels. For example, neurodegenerative diseases can cause different physiological effects in males and females. In particular, estrogen studies...

activated, causing the granulosa cells to begin to secrete estrogen. This increased level of estrogen stimulates production of gonadotropin-releasing hormone...

include antiestrogens or estrogen blockers such as selective estrogen receptor modulators (SERMs) like tamoxifen, selective estrogen receptor degraders like...

controls the production and release of eggs and the cyclic release of estrogen and progesterone. The uterine cycle governs the preparation and maintenance...

bioidentical estrogen, or an agonist of the estrogen receptor, the biological target of estrogens like endogenous estradiol. Due to its estrogenic activity...

cancer Estrogen deprivation therapy for women with estrogen receptor-positive breast cancer High-dose estrogen therapy for women with estrogen receptor-positive...

Bazedoxifene/conjugated estrogens, sold under the brand name Duavee in the US and Duavive in the EU, is a fixed-dose combination medication for the treatment...

An estrogen conjugate is a conjugate of an endogenous estrogen. They occur naturally in the body as metabolites of estrogens and can be reconverted back...

is usually a natural change related to a decrease in circulating blood estrogen levels. It can occur earlier in those who smoke tobacco. Other causes include...