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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.
For example a Korean study in 2011 showed an overall average age of 12.7, with around 20% before age 12, and more than 90% by age 14. [5] A Chinese study from 2014 published in Acta Paediatrica showed similar results (overall average of age 12.8 in 2005 down to age 12.3 in 2014) and a similar trend in time, but also similar findings about ...
The findings, published May 29 in JAMA Network Open, indicate the average age at menarche — an individual’s first period — decreased from 12.5 years for those born 1950–1969 to 11.9 years ...
Black children of low socioeconomic status are starting their periods earlier than the average age, and it takes more time for their menstrual cycles to become regular, according to a new report ...
In fact, anytime between 8 and 16 is normal. In Canada, the average age of menarche is 12.72, [59] and in the United Kingdom it is 12.9. [60] The time between menstrual periods (menses) is not always regular in the first two years after menarche. [61] Ovulation is necessary for fertility, but may or may not accompany the earliest menses. [62]
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 ...
In medicine, precocious puberty is puberty occurring at an unusually early age. In most cases, the process is normal in every aspect except the unusually early age and simply represents a variation of normal development. There is early development of secondary sex characters and gametogenesis also starts earlier. Precocious puberty is of two ...
You may also notice early bleeding due to hormonal fluctuations as you start transitioning into menopause (which typically happens between ages 45 and 55). 6. Stress is impacting your cycle.
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