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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 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 ...
How long does period bloating last? Bloating usually starts to kick in about one to two days before the start of a woman's period, according to the Mayo Clinic. But some women experience symptoms ...
“There can be a lot of causes of bleeding in very early pregnancy that people interpret as a period,” Frugoni says. “But, it's not the same process as the endometrium dying and shedding.”
Knowing the first day of a woman’s last menstrual period is useful in other ways. Dr. Arlene Go, an ob-gyn and specialist fellow studying endometriosis at Hera Biotech, tells Yahoo Life that it ...
Mammals during pregnancy can have one or more gestations at the same time, for example in a multiple birth. [2] The time interval of a gestation is called the gestation period. In obstetrics, gestational age refers to the time since the onset of the last menses, which on average is fertilization age plus two weeks. [3]
The average age of the last period in the United States is 51 years, in Russia is 50 years, in Greece is 49 years, in Turkey is 47 years, in Egypt is 47 years and in India is 46 years. [44] Beyond the influence of genetics, these differences are also due to early-life environmental conditions [45] and associated with epigenetic effects. [46]
I’m 48, soon to be 49, and last year I went six months without getting my period. I thought to myself, this is it! No more dealing with PMS bloat, or cramps or worrying about having to change ...