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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. Precocious puberty - Wikipedia

    en.wikipedia.org/wiki/Precocious_puberty

    [18] [35] [36] As a result, "early puberty" in children as young as 8 and 9 is no longer considered abnormal, particularly with girls. Although it is not considered as abnormal, it may be upsetting to parents [21] [37] and can be harmful to children who mature physically at a time when they are immature mentally. [38]

  4. Puberty - Wikipedia

    en.wikipedia.org/wiki/Puberty

    Early puberty also correlates with increased sexual activity and a higher instance of teenage pregnancy, both of which can lead to depression and other psychosocial issues. [23] On the other hand, late-maturing males develop lower self-esteem and confidence and generally have lower popularity among peers, due to their less-developed physiques.

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

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

    There has been a trend for years of children reaching puberty at earlier ages, and the reason why has largely mystified doctors. Now, new research is suggesting a possible culprit—and it shows ...

  6. Early puberty may be linked to a common chemical used in ...

    www.aol.com/news/early-puberty-may-linked-common...

    Starting puberty significantly early — younger than age 8 in girls, 9 in boys — may have health effects lasting into adulthood, including higher risks of breast cancer, diabetes and heart disease.

  7. What is precocious puberty? Experts explain. - AOL

    www.aol.com/lifestyle/parents-know-precocious...

    Although early puberty in boys is not common, studies suggest that the average age of puberty in boys decreased between 1993 to 2008. The researchers attributed the early onset of puberty in boys ...

  8. Kallmann syndrome - Wikipedia

    en.wikipedia.org/wiki/Kallmann_syndrome

    The underlying cause is due to the defective migration of GNRH neurons from olfactory placode to hypothalamus, leading to congenital GNRH deficiency. This leads to olfactory problems such as anosmia, optic defects like color blindness, and results in hypothalmic deficiencies associated with low levels of LH, affecting sex hormone testosterone in males or estrogen and progesterone in females.

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

    www.aol.com/lifestyle/why-puberty-education-u...

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