Search results
Results from the WOW.Com Content Network
A study of girls in Istanbul, Turkey, in 2011 found the median age at menarche to be 12.7 years. [ better source needed ] [ 9 ] In the United States, an analysis of 10,590 women aged 15–44 taken from the 2013–2017 round of the CDC's National Survey of Family Growth found a median age of 11.9 years (down from 12.1 in 1995), with a mean of 12 ...
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 ...
Having the right amount of body fat is critical to producing the hormones that lead to your first cycle, which is why girls tend to put on a little weight before they have their menarche, she says.
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 ...
According to a new study published in JAMA, menarche — the first period — has occurred steadily earlier and earlier for generations since the 1950s. Researchers examined data collected from ...
Starting menstruation is an important sign of health. A new study shows that the trend of children starting at an earlier age may point to worrying conditions.
Menarche (the first menstrual cycle at puberty) is traditionally treated as a sign that the girl is probably ready for sex and marriage, as well as for adult duties in the household. Initiation rites on menarche include instruction on sex and marital relations as well as on menstrual management. This is conducted by older women.
The Sunrise Dance ceremony is a celebration of menarche by the Apache tribal community in Arizona and Mexico region. [10] [11] The community members and leaders assist the family in carrying out this ceremony. The community starts preparing for this ceremony months before.