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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 ...
Menstrual education can also help girls know what is normal and abnormal about their periods (e.g., pain levels, amount of bleeding, and frequency), which can help them and their doctors identify ...
Mammals that have menstrual cycles shed the endometrium through menstruation instead. Humans, elephant shrews , and a few other species have menstrual cycles rather than estrous cycles. Humans, unlike most other species, have concealed ovulation , a lack of obvious external signs to signal estral receptivity at ovulation (i.e., the ability to ...
Most girls get their first menstrual cycle between 12 and 13 years old, according to The American College of Obstetricians and Gynecologists. The age of menstruation onset is slightly younger for Black girls due to health disparities, increased material hardship, and levels of stress. For Black girls, the first moon party is a rite of passage ...
Do women still get their periods while in a coma? The question took social media by storm after it was posted by user @CloudxRaven last Monday (December 2), garnering almost 24 million views with ...
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 ...
New research suggests a compound found in a wide variety of products may send a signal to an area of the brain that triggers the start of puberty.
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.