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  2. Menopause - Wikipedia

    en.wikipedia.org/wiki/Menopause

    Menopause occurs because of the sharp decrease of estradiol and progesterone production by the ovaries. After menopause, estrogen continues to be produced mostly by aromatase in fat tissues and is produced in small amounts in many other tissues such as ovaries, bone, blood vessels, and the brain where it acts locally. [ 62 ]

  3. Menstrual cycle - Wikipedia

    en.wikipedia.org/wiki/Menstrual_cycle

    Menstrual cycle The menstrual cycle is a series of natural changes in hormone production and the structures of the uterus and ovaries of the female reproductive system that makes pregnancy possible. The ovarian cycle controls the production and release of eggs and the cyclic release of estrogen and progesterone. The uterine cycle governs the preparation and maintenance of the lining of the ...

  4. Here's What Really Happens During Your Menstrual Cycle - AOL

    www.aol.com/heres-really-happens-during...

    After menarche (a person’s first period) and during perimenopause (the transitional time before menopause officially occurs), cycles can be anovulatory, meaning ovulation doesn’t occur ...

  5. What to know about menopause, according to a doctor - AOL

    www.aol.com/know-menopause-according-doctor...

    Menopause is a nearly universal experience for women who live to middle age. In the United States, an estimated 1.3 million women enter menopause every year. Around 90% of women experience ...

  6. Menopause: 6 surprising symptoms you didn't know about - AOL

    www.aol.com/lifestyle/menopause-6-surprising...

    Menopause can also be medically induced by a hysterectomy or surgical removal of the ovaries, according to the National Institute on Aging. "If you have surgery to remove your uterus or ovaries ...

  7. Evolution of menopause - Wikipedia

    en.wikipedia.org/wiki/Evolution_of_menopause

    Another theory states that menopause is the byproduct of the evolutionary selection for follicular atresia, a factor that causes menopause. Menopause results from having too few ovarian follicles to produce enough estrogen to maintain the ovarian-pituitary-hypothalamic loop, which results in the cessation of menses and the beginning of menopause.

  8. Anovulation - Wikipedia

    en.wikipedia.org/wiki/Anovulation

    Anovulation is when the ovaries do not release an oocyte during a menstrual cycle. Therefore, ovulation does not take place. However, a woman who does not ovulate at each menstrual cycle is not necessarily going through menopause. Chronic anovulation is a common cause of infertility.

  9. Grandmother hypothesis - Wikipedia

    en.wikipedia.org/wiki/Grandmother_hypothesis

    The grandmother hypothesis is a hypothesis to explain the existence of menopause in human life history by identifying the adaptive value of extended kin networking. It builds on the previously postulated "mother hypothesis" which states that as mothers age, the costs of reproducing become greater, and energy devoted to those activities would be better spent helping her offspring in their ...

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