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In very rare instances, menarche may occur at an unusually early age, preceding thelarche and other signs of puberty. This is termed isolated premature menarche, but other causes of vaginal bleeding must be investigated and excluded. Growth is usually normal. [16] Isolated premature menarche is rarely the first manifestation of precocious puberty.
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 ...
“This is important because early menarche and irregular periods can signal physical and psychosocial problems later in life, and these trends may contribute to the increase in adverse health ...
The researchers also found that age at menarche is now more likely to occur before the age of 11 years, which the authors class as “early” — increasing from 8.6% in the 50s and 60s to 15.5% ...
The first menstrual period occurs after the onset of pubertal growth, and is called menarche. The average age of menarche is 12 to 15 years. [1] [8] However, it may occur as early as eight. [2] The average age of the first period is generally later in the developing world, and earlier in the developed world.
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 ...
Girls who get their periods on the earlier side are at a slightly higher risk for one disease, ... There's a medical term for the age when you got your first period—menarche. Girls have started ...
Gonadarche (/ ˌ ɡ oʊ n ə ˈ d ɑːr k i /) refers to the earliest gonadal (reproductive gland) changes of puberty. [1] In response to pituitary gonadotropins, the ovaries in females and the testes in males begin to grow and increase the production of the sex steroids, especially estradiol and testosterone. [2]