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  2. Delayed puberty - Wikipedia

    en.wikipedia.org/wiki/Delayed_puberty

    Puberty is considered delayed when the child has not begun puberty when two standard deviations or about 95% of children from similar backgrounds have. [7] [8] [9]In North American girls, puberty is considered delayed when breast development has not begun by age 13, when they have not started menstruating by age 15, [2] and when there is no increased growth rate. [8]

  3. Why Is Puberty Starting Earlier? New Research Points To ... - AOL

    www.aol.com/why-puberty-starting-earlier-earlier...

    Another study, which was published in 2024, found that the average age that girls had their first periods decreased from 12.5 years old in 1950 to 1969 to 11.9 years old in 2000 to 2005.

  4. Puberty - Wikipedia

    en.wikipedia.org/wiki/Puberty

    [9] [10] [11] Puberty that starts earlier than usual is known as precocious puberty, and puberty which starts later than usual is known as delayed puberty. Notable among the morphologic changes in size, shape, composition, and functioning of the pubertal body, is the development of secondary sex characteristics, the "filling in" of the child's ...

  5. Precocious puberty - Wikipedia

    en.wikipedia.org/wiki/Precocious_puberty

    Early puberty also puts girls at a higher risk for teasing or bullying, mental health disorders and short stature as adults. [19] [39] [56] Girls as young as 8 are increasingly starting to menstruate, develop breasts and grow pubic and underarm hair; these "biological milestones" typically occurred only at 13 or older in the past. African ...

  6. With puberty starting earlier than ever, doctors urge greater ...

    www.aol.com/news/puberty-starting-earlier-ever...

    Precocious puberty on the rise. In the mid-19th century, girls had their first periods — which typically come about two years after they begin to show signs of breasts or pubic hair — at age ...

  7. Why puberty education in the U.S. starts too late, say ...

    www.aol.com/news/puberty-education-starts-too...

    Experts say that lessons on puberty in school aren't comprehensive enough and often happen too late — after development has already started for many. Why puberty education in the U.S. starts too ...

  8. Constitutional growth delay - Wikipedia

    en.wikipedia.org/wiki/Constitutional_growth_delay

    Constitutional delay of growth and puberty (CDGP) is a term describing a temporary delay in the skeletal growth and thus height of a child with no physical abnormalities causing the delay. [1] Short stature may be the result of a growth pattern inherited from a parent (familial) or occur for no apparent reason (idiopathic).

  9. Study of age of puberty in girls suggests links with ... - AOL

    www.aol.com/study-age-puberty-girls-suggests...

    In girls, puberty and periods normally start between the ages of 10 to 15, but experts say this has been getting earlier in recent decades. In girls, puberty and periods normally start between the ...