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The average age of a girl's first period is 12 to 13 (12.5 years in the United States, [6] 12.72 in Canada, [7] 12.9 in the UK [8]) but, in postmenarchal girls, about 80% of the cycles are anovulatory in the first year after menarche, which declines to 50% in the third year, and to 10% by the sixth. [9]
Called menarche, the first period occurs at the age of around twelve or thirteen years. [8] The average age is generally later in the developing world and earlier in the developed world. [42] In precocious puberty, it can occur as early as age eight years, [43] and this can still be normal. [44] [45]
Middle age (or middle adulthood) is the age range of the years halfway between childhood and old age. [1] The exact range is subject to public debate, but the term is commonly used to denote the age range from around 45 to around 65 years.
2% of women under the age of 40, 5% between the ages of 40–45 and the same number between the ages of 55–58 have their last bleeding. [43] 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]
Menstruation starting as young as 8 years would still be considered normal. [2] The average age of the first period is generally later in the developing world, and earlier in the developed world. [3] The typical length of time between the first day of one period and the first day of the next is 21 to 45 days in young women.
Old appliances, gadgets, TV shows, actors – many things can tickle our nostalgia. So, why don't “Heck, I’m Old”: 50 Funny Posts About People Realizing They’re Not Kids Anymore (New Pics)
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