Onset of puberty in girls has fallen by five years since 1920, Children
By A Mystery Man Writer
Description
No one is sure what is causing the change
![Onset of puberty in girls has fallen by five years since 1920, Children](https://i.dailymail.co.uk/1s/2023/02/03/22/67308605-11680925-Going_through_puberty_before_their_peers_can_be_extremely_aliena-a-2_1675465166950.jpg)
America's premature puberty phenomenon explained: Girls are
![Onset of puberty in girls has fallen by five years since 1920, Children](https://upload.wikimedia.org/wikipedia/commons/thumb/b/ba/International_children_dressed_in_their_native_costumes_participate_in_the_100th_anniversary_of_the_Statue_of_Liberty_-_DPLA_-_4461efafd5c4ba7fde8eedb1f13f439e.jpeg/1200px-thumbnail.jpeg)
Child - Wikipedia
![Onset of puberty in girls has fallen by five years since 1920, Children](https://www.verywellfamily.com/thmb/9w04sKlJip3f4jMbE-U49MrKBos=/1500x0/filters:no_upscale():max_bytes(150000):strip_icc()/184859003-56a99b5c3df78cf772a8d4b6.jpg)
Helping Your Tween Through Delayed Puberty
![Onset of puberty in girls has fallen by five years since 1920, Children](https://www.researchgate.net/publication/350755283/figure/fig1/AS:1010615887876098@1617961012877/Mean-number-of-children-by-womens-year-of-birth-1920-1980-in.png)
1: Mean number of children by women's year of birth, 1920-1980 (in %)
![Onset of puberty in girls has fallen by five years since 1920, Children](http://montessorimuddle.org/wp-content/uploads/2011/08/secular-trend-puberty.png)
Searching for Answers: Earlier Puberty Over the Last 200 Years
![Onset of puberty in girls has fallen by five years since 1920, Children](https://www.researchgate.net/publication/337719425/figure/tbl1/AS:832074940416000@1575393533110/Questionnaires-and-interviews-of-the-FinnTwin16twin-cohort-in-five-waves-of-data.png)
Questionnaires and interviews of the FinnTwin16twin cohort in five
![Onset of puberty in girls has fallen by five years since 1920, Children](https://www.researchgate.net/publication/313395534/figure/fig1/AS:460922708860928@1486903945034/Schematic-picture-of-postnatal-height-and-the-three-partly-correlated-GWA-phenotypes.png)
Schematic picture of postnatal height and the three partly correlated
![Onset of puberty in girls has fallen by five years since 1920, Children](https://i.guim.co.uk/img/media/9a146b6d97d90aeb51e5fe72dea53cf1e82407de/0_298_5669_3402/master/5669.jpg?width=120&dpr=1&s=none)
Onset of puberty in girls has fallen by five years since 1920
![Onset of puberty in girls has fallen by five years since 1920, Children](https://www.aljazeera.com/wp-content/uploads/2022/07/afghanistan-2022-matt-reichel-42.jpg?resize=1920%2C1440)
/wp-content/uploads/2022/07/afgha
![Onset of puberty in girls has fallen by five years since 1920, Children](https://raisingchildren.net.au/__data/assets/image/0020/48107/puberty-early-or-latenarrow.jpg)
Early puberty & late puberty
![Onset of puberty in girls has fallen by five years since 1920, Children](https://images.medindia.net/amp-images/health-images/puberty-at-six.jpg)
Puberty at Six - Is Junk Food the Culprit?
![Onset of puberty in girls has fallen by five years since 1920, Children](https://i.guim.co.uk/img/static/sys-images/Observer/Pix/pictures/2012/10/20/1350766296846/Girl-on-a-swing-010.jpg?width=465&dpr=1&s=none)
Onset of puberty in girls has fallen by five years since 1920
![Onset of puberty in girls has fallen by five years since 1920, Children](https://cdn.psychologytoday.com/sites/default/files/styles/article-inline-half-caption/public/article/2019/current-date%3A08/062419_psychologytoday_153.jpg?itok=Ncc2mdBq)
Why More Kids Are Starting Puberty Earlier Than Ever Before
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