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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 ...
Menstrual synchrony, also called the McClintock effect, [1] or the Wellesley effect, [2] is a contested process whereby women who begin living together in close proximity would experience their menstrual cycle onsets (the onset of menstruation or menses) becoming more synchronized together in time than when previously living apart.
If you have concerns about late or missed periods, bleeding duration or heaviness, menstrual cramp intensity or changes in any of the above, it’s smart to schedule a visit with a gynecologist ...
The endocrine system coincides with the menstrual cycle and goes through thirteen cycles (and thus thirteen LH spikes) during the course of normal folliculogenesis. However, coordinated enzyme signalling and the time-specific expression of hormonal receptors ensures that follicle growth does not become disregulated during these premature spikes.
While cramps are a common period-related pain, “it is not uncommon for people to have cramps outside of their menstrual cycle,” explains Kiarra King, M.D., F.A.C.O.G., board-certified ...
Diagram illustrating how the uterus lining builds up and breaks down during the menstrual cycle Menstruation (also known as a period, among other colloquial terms) is the regular discharge of blood and mucosal tissue from the inner lining of the uterus through the vagina. The menstrual cycle is characterized by the rise and fall of hormones. Menstruation is triggered by falling progesterone ...
Some women have noted changes in their menstrual cycles after getting vaccinated for COVID-19. Anti-vaxxers speculate this is a sign the vaccines could affect a woman's fertility. Learn what new ...
Irregular cycles or irregular periods is an abnormal variation in length of menstrual cycles. An individual usually experiences cycle length variations of up to eight days between the shortest and longest cycle lengths. Lengths ranging between eight and 20 days are considered moderately irregular. [6]