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Related Concept Videos

Menopause01:28

Menopause

129
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...
129
Hormonal Regulation of the Menstrual Cycle01:22

Hormonal Regulation of the Menstrual Cycle

273
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...
273
The Menstrual Cycle01:19

The Menstrual Cycle

669
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...
669
Menses Phase01:18

Menses Phase

210
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...
210
Hormonal Control of the Ovarian Cycle01:30

Hormonal Control of the Ovarian Cycle

393
The ovarian cycle is meticulously regulated by the hypothalamic-pituitary-gonadal axis. This cycle orchestrates the release of a mature oocyte, essential for reproduction.
Before puberty, the hypothalamus releases GnRH in a low frequency, low amplitude pulsatile manner. This along with the immature hypothalamic-pituitary-gonadal axis activity, results in low estrogen levels and the absence of a fully functional ovarian cycle.  At puberty, GnRH secretion increases in both frequency and...
393
Ovarian Cycle01:27

Ovarian Cycle

945
The menstrual cycle includes a critical component known as the ovarian cycle, which undergoes two main phases each month—the follicular phase and the luteal phase. The follicular phase is variable and averaging around 14 days. Ovulation, triggered by a surge in luteinizing hormone (LH), marks the transition between the two phases. The second phase, the luteal phase, is relatively consistent, lasting approximately 14 days, and is marked by the activity of the corpus luteum. While a cycle...
945

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A Method to Study the Impact of Chemically-induced Ovarian Failure on Exercise Capacity and Cardiac Adaptation in Mice
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Understanding the menopause journey.

Nanette Santoro1

  • 1Department of Obstetrics and Gynecology, University of Colorado School of Medicine, Aurora, CO, USA.

Climacteric : the Journal of the International Menopause Society
|February 4, 2025
PubMed
Summary
This summary is machine-generated.

Menopause involves significant hormonal shifts and symptom changes that begin before the final menstrual period. Understanding these dynamic changes during the menopause transition is key to supporting women

Keywords:
Menopausecardiovascular healthhormone therapymenopausal transitionperimenopausevasomotor symptoms

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Area of Science:

  • Reproductive endocrinology and women's health.

Background:

  • Menopause is a unique reproductive milestone for individuals with ovaries, marked by the cessation of menstruation and a significant decline in estrogen and progesterone.
  • Current focus often centers on hormone absence, overlooking dynamic changes occurring before the final menstrual period.

Purpose of the Study:

  • To highlight that the most significant menopausal symptoms and health marker changes commence during the late menopause transition, prior to the final menstrual period.
  • To emphasize the adaptive nature of the menopause transition and suggest future research directions.

Main Methods:

  • The abstract does not specify methods but discusses observed changes in symptoms and health markers during the menopause transition.

Main Results:

  • Vasomotor symptoms, the most prevalent menopausal complaint, peak in frequency and severity during the late transition, while women are still menstruating.
  • Adverse changes in body composition, lipoproteins, and lipids also acutely worsen during the late transition, then follow a slower, age-related progression.
  • Many detrimental processes observed during the transition stabilize after its completion.

Conclusions:

  • The menopause transition is an adaptive biological process for women.
  • Facilitating this adaptation and understanding its implications are crucial for advancing women's health research and care.