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Related Concept Videos

Menopause01:28

Menopause

Menopause, a natural biological process marking the end of a woman's fertility, typically occurs between the fifth and sixth decade of life. This phase is characterized by the exhaustion of the ovarian follicle pool, leading to less responsive ovaries despite the high levels of Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH). The consequential decrease in estrogen production results in symptoms like hot flashes, heavy sweating, headaches, hair loss, muscle pains, vaginal...
Hormonal Regulation of the Menstrual Cycle01:22

Hormonal Regulation of the Menstrual Cycle

The ovarian cycle regulates endometrial changes throughout a single menstrual cycle via the coordinated action of gonadotrophin-releasing hormone (GnRH) and gonadotrophins.
At puberty, GnRH begins a pulsatile release pattern, which triggers the anterior pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). The frequency and amplitude of GnRH pulses vary across the menstrual cycle, with faster pulses favoring LH release and slower pulses favoring FSH release.
Menses Phase01:18

Menses Phase

The uterine cycle begins with the menstrual phase, which is considered day one of the cycle and typically lasts about five days. This phase is characterized by the degeneration and shedding of the stratum functionalis, the functional layer of the endometrium.
When fertilization does not occur, the corpus luteum deteriorates, causing a significant drop in the levels of estrogen and progesterone in the body. This hormonal decrease triggers the release of prostaglandins, which cause the uterine...
Major Hormones and Their Functions01:27

Major Hormones and Their Functions

Hormones, the biochemical messengers produced by endocrine glands, are pivotal in regulating bodily functions and maintaining homeostasis. Each hormone's balance is crucial; imbalances can lead to significant physiological disruptions. Major hormones include oxytocin, cortisol, epinephrine, estrogen, testosterone, thyroxine, growth hormone, insulin, and glucagon.
Oxytocin, produced in the hypothalamus and released by the pituitary gland, plays a role in social bonding, childbirth, and lactation.
The Menstrual Cycle01:19

The Menstrual Cycle

The menstrual cycle is a recurrent sequence of changes in the uterine endometrium, specifically its functional layer, the stratum functionalis. This cycle prepares the uterus for potential pregnancy. This cycle typically spans 21–35 days, averaging 28 days, and aligns with the ovarian cycle, regulated by fluctuating levels of ovarian hormones, primarily estrogen and progesterone.
The menstrual phase occurs from days 1 to 5 and involves the shedding of the stratum functionalis, as a uterine...
Secretory Phase01:19

Secretory Phase

The secretory phase of the menstrual cycle, spanning from day 14 to 28 in a typical 28-day cycle, is a period of significant physiological changes in the female reproductive system. This phase commences immediately after ovulation and is characterized by the preparation of the endometrium for potential embryo implantation.
Following ovulation, the corpus luteum, a temporary endocrine structure, produces progesterone and estrogens. These hormones stimulate the growth and coiling of endometrial...

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Related Experiment Video

Updated: May 9, 2026

An In Vivo Estrogen Deficiency Mouse Model for Screening Exogenous Estrogen Treatments of Cardiovascular Dysfunction After Menopause
06:18

An In Vivo Estrogen Deficiency Mouse Model for Screening Exogenous Estrogen Treatments of Cardiovascular Dysfunction After Menopause

Published on: August 13, 2019

[Phytoestrogens and menopause].

M Torella1, F La Rezza, D Labriola

  • 1Dipartimento di Ginecologia Ostetricia e Scienze della Riproduzione della Seconda Università degli Studi di Napoli, Napoli, Italia.

Minerva Ginecologica
|July 25, 2013
PubMed
Summary
This summary is machine-generated.

Menopause marks the end of menstruation due to declining estrogen. Phytoestrogens, plant-derived compounds, are explored as a natural alternative to hormone replacement therapy for managing menopausal symptoms.

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Area of Science:

  • Gynecology
  • Endocrinology
  • Nutritional Science

Background:

  • Menopause is a natural biological process in women aged 48-55, marked by estrogen deficiency and cessation of menstruation.
  • Estrogen deficiency leads to early menopausal symptoms (hot flashes, insomnia) and late-phase issues (osteoporosis, cardiovascular disease).
  • Hormone replacement therapy (HRT) use is low in Italy due to psychological factors and fear of side effects.

Purpose of the Study:

  • To explore phytoestrogens as a natural alternative for managing menopausal symptoms.
  • To investigate the potential benefits of phytoestrogens based on observations in Eastern populations.

Main Methods:

  • Observational comparison between Eastern and Western postmenopausal women.
  • Review of existing literature on phytoestrogens and their effects.

Main Results:

  • Eastern postmenopausal women exhibit lower incidence of menopausal symptoms, cardiovascular disease, cancer, and osteoporosis.
  • Phytoestrogens are considered a natural alternative due to their plant origin and observed health benefits.

Conclusions:

  • Phytoestrogens hold significant importance as a natural alternative for postmenopausal women.
  • Further research into phytoestrogens may offer effective strategies for mitigating menopausal health issues.