Estrogen

Estrogens are a family of related molecules that stimulate the development and maintenance of female characteristics and sexual reproduction.

What is Estrogen?

Estrogens (also called Oestrogens) are steroid compounds that are important for development and functioning of females of the species. They are named so because they play an important role in the estrous cycle. Their name comes from estrus/oistros (period of fertility for female mammals) + gen/gonos = to generate.

Estrogen in Cosmetics

Estrogen Types

Estrogen Function

Estradiol and Estrogen Levels

The Role of Estrogen in Men’s Health

Estrogen in Medicine

Latest Estrogen News and Research

Combined CDK4/6 and EGFR inhibition improves pancreatic cancer therapy

Clinically available KRAS inhibitors mainly target G12C, which is rare in PDAC and often acquires resistance. Oncogenic KRAS inactivates RB1 via CDK4/6, while RB1 mutation is rare.

13 Mar 2026

Blood test marker p-tau217 helps detect early dementia risk in cognitively healthy older women

A long-term study of 2,766 women in the Women’s Health Initiative Memory Study found that higher baseline plasma p-tau217 levels were associated with a greater risk of developing mild cognitive impairment or probable dementia.

11 Mar 2026

Dual-positive hybrid cells linked to shorter survival in advanced breast cancer

An enigmatic type of circulating tumor cell called a dual-positive (DP) cell is associated with shorter survival time in patients with advanced breast cancer, according to a study led by investigators at Weill Cornell Medicine and NewYork-Presbyterian.

11 Mar 2026

Social isolation and loneliness raise cognitive decline risk in perimenopausal women

The relationship between social connections and cognitive abilities is a complex one, particularly during the perimenopausal period when women transition from the reproductive period to menopause.

11 Mar 2026

Study links p-tau217 levels to long-term dementia risk in women

Researchers from the University of California San Diego have found that a novel blood-based biomarker can predict a woman's risk of developing dementia as many as 25 years before symptoms appear.

10 Mar 2026

Postbiotics may help treat PCOS by restoring microbiome balance

Emerging studies suggest postbiotics could aid PCOS management by restoring gut microbiome balance and enhancing insulin sensitivity and hormonal regulation.

10 Mar 2026

Women face higher liver fibrosis risk from cardiometabolic factors than men

Women with certain cardiometabolic risk factors, including type 2 diabetes and high waist circumference, face a greater increase in risk for liver fibrosis than men with the same risk factors.

9 Mar 2026

Machine learning detects early brain changes linked to Alzheimer's disease

Worcester Polytechnic Institute (WPI) researchers have used a form of artificial intelligence (AI) to analyze anatomical changes in the brain and predict Alzheimer's disease with nearly 93% accuracy.

5 Mar 2026

Repurposed kidney drug finerenone shows promise in treating premature ovarian insufficiency

Premature ovarian insufficiency (POI) is a clinically significant cause of infertility that affects between 1 to 3% of women of childbearing age.

5 Mar 2026

Vaginal estrogen therapy is safe for young endometrial cancer survivors, study finds

Despite the increased incidence of endometrial cancer in younger women, there is limited research regarding the safety of local, low-dose vaginal estrogen therapy (ET) for survivors.

4 Mar 2026

Mathematical model identifies how estrogen protects women from high blood pressure

High blood pressure, or hypertension, affects more than one billion people worldwide and is a leading cause of heart disease and stroke.

4 Mar 2026

Childhood cavities and gum disease raise adult heart disease risk

The link between childhood oral health and adult heart disease underscores the need for preventive dental care to enhance lifelong cardiovascular health.

4 Mar 2026

Study links gut microbiome health directly to ovarian aging processes

A new study details how fecal transplants from older female mice significantly improve ovarian function and fertility in young mice. The surprising results reveal a direct link between the microbiome (the collection of all bacteria and other microbes present) of the gut and ovarian health and function.

3 Mar 2026

Hormone fluctuations influence perceived effort during intense workouts

Female sex hormones estrogen and progesterone fluctuate monthly across the menstrual cycle, affecting moods and energy levels.

2 Mar 2026

Precision mRNA vaccine strategy shows early promise for improving TNBC relapse risk

An individualized neoantigen mRNA vaccine was tested in patients with early-stage triple-negative breast cancer and showed feasibility, safety, and strong T cell immune responses. Long-term follow-up suggested durable immune memory with encouraging relapse-free outcomes, though controlled trials are needed to confirm clinical benefit.

19 Feb 2026

New guidelines outline comprehensive care for acute pulmonary embolism

Early detection and prompt treatment of acute pulmonary embolism (PE), a sudden and potentially life-threatening blood clot that blocks arteries in the lungs, is critical.

19 Feb 2026

Sustained high progesterone during pregnancy can improve menstrual cyclicity in PCOS patients

Polycystic ovary syndrome (PCOS) affects 6%−20% of reproductive-aged women, and is commonly accompanied by irregular menstrual cycles and anovulatory infertility.

11 Feb 2026

Does motherhood influence brain aging? New research suggests a positive cognitive association

Longitudinal data from postmenopausal women suggest that cumulative pregnancy duration and breastfeeding history are associated with modestly better cognitive performance later in life. These associations reflect higher cognitive trajectory levels rather than proven slowing of decline, and causality remains uncertain.

5 Feb 2026

Natural ovulation offers a safer path to IVF success

Researchers compare the effects of natural ovulation and external hormone replacement regimens for preparing the uterus before frozen embryo transfer.

4 Feb 2026