JAMA Pediatr April 2020 PMID 32040143

Worldwide Secular Trends in Age at Pubertal Onset Assessed by Breast Development Among Girls: A Systematic Review and Meta-analysis.

Camilla Eckert-Lind, Alexander S Busch, Jørgen H Petersen, Frank M Biro, Gary Butler, Elvira V Bräuner, Anders Juul

Mentions

195
Peak: 12 in Feb 2020
across 5 sources since Feb 2020

Extended reach

265,684
potential audience

Total likes

84

Video views

3,290

Mentions per month

Feb 2020 – Sep 2025

Where it's discussed

  • News144 articles
  • X / Twitter36 posts
  • Blogs10 articles
  • Facebook3 posts
  • YouTube2 videos

AI synopsis

What people are saying

The overall tone reflects genuine concern and curiosity about the trend toward earlier puberty, exemplified by statements like 'girls begin puberty almost a year earlier' and references to regional differences; the tone, with data-driven phrases and calls for awareness, underscores meaningful engagement with the research findings.

AgreementModerate agreement

Most discussions recognize and support the finding that the average age of pubertal onset is decreasing globally, with several posts citing specific data points like 'puberty almost a year earlier than in 1970s.'

InterestHigh interest

Posts demonstrate high interest by referencing detailed statistical trends, regional differences, and implications for health, indicating engagement with the article's content.

EngagementModerate engagement

Commenters ask for clarifications, mention implications in clinical practice, or discuss potential biases, showing active engagement rather than dismissiveness.

ImpactModerate impact

The discussions highlight potential impacts on health guidelines, the need for updated definitions, and societal awareness, signaling a moderate level of influence.

Top posts

Most liked on X and Bluesky
Enrique Coperías
@CienciaDelCope · X

La pubertad empieza antes a nivel mundial. El inicio del desarrollo del pecho en las niñas–la telarquia– se adelanta un año en cuatro décadas, según un estudio en la revista 'Jama Pediatrics'. https://t.co/f7TDgBQvNE https://t.co/bevApXVBiw

Jun 9, 2022 · 17 likes · 5 shares · 58,892 followers View post →
jessy
@jessyrock25 · X

@gryindub @banter44 @mahogoniee @dykeiana @notcapnamerica @LindzManqele @ZEExx1991 studies show that over the last few decades the onset of puberty has decreased at about 3 months/decade https://t.co/HM716HvnxD

Aug 22, 2023 · 7 likes View post →
Robert Young Pelton
@RYP__ · X

Some trends show 3months earlier onset per year...but..."Another potential bias is publication bias, and therefore there is a potential risk that studies showing unaltered timing of puberty (negative findings) may not be published." https://t.co/FEIykkZQ4m

Aug 23, 2024 · 6 likes · 1 share · 43,031 followers View post →
jessy
@jessyrock25 · X

@dykeiana @banter44 @notcapnamerica @LindzManqele @ZEExx1991 yes actually.... regardless i dont understand the controversy https://t.co/HM716HvnxD

Aug 22, 2023 · 5 likes View post →
JAMA Pediatrics
@JAMAPediatrics · X

The medical community needs current and relevant data to redefine “precocious puberty,” because the traditional definition may be outdated, at least in some regions of the world https://t.co/wqeEO7EHC8

Feb 11, 2020 · 4 likes · 3 shares · 36,494 followers View post →
JAMA Pediatrics
@JAMAPediatrics · X

The medical community needs current and relevant data to redefine “precocious puberty,” because the traditional definition may be outdated, at least in some regions of the world https://t.co/BRJlAPAm6z

Apr 19, 2020 · 3 likes · 36,494 followers View post →

All mentions

Mattelot
@eyeseepatterns · X

@DelaSverige @RadioGenoa Hej där, agreed but black children seem to develop earlier than other races. We catch-up and overtake though, for whatever reason, ime (teacher) Eckert-Lind et al. (2020): "Worldwide secular trends in age at pubertal onset assessed by breast development among girls: a systematic

Sep 28, 2025 · 161 followers View post →
رحمي
@AM_Ihere · X

@Bersukaria29 @dintaifungenak @tanyakanrl https://t.co/1WtPdcyD0W dr. Mesty jelasin ttg ini Nder di short yt

Mar 17, 2025 · 742 followers View post →
SOS MCS
@sos_mcs · X

Les scientifiques mettent en garde contre les #parfums et produits parfumés Wissenschaftler warnen vor #Parfüms und #Duftstoffen https://t.co/YOjosO4Vad https://t.co/CLs7OzWsi2

Dec 13, 2024 · 1 like · 780 followers View post →
D. Roselyn Cerutis Ph.D.
@DRC31077 · X

Worldwide Secular Trends in Age at Pubertal Onset Assessed by Breast Development Among Girls: A Systematic Review ... https://t.co/C6SKach6SL

Aug 28, 2024 · 134 followers View post →
Deb C
@quiltthewalls · X

RT @RYP__: Some trends show 3months earlier onset per year...but..."Another potential bias is publication bias, and therefore there is a po…

Aug 23, 2024 · 1 share · 560 followers View post →
Robert Young Pelton
@RYP__ · X

Some trends show 3months earlier onset per year...but..."Another potential bias is publication bias, and therefore there is a potential risk that studies showing unaltered timing of puberty (negative findings) may not be published." https://t.co/FEIykkZQ4m

Aug 23, 2024 · 6 likes · 1 share · 43,031 followers View post →
svt
@vmarquetvienne · X

#svt #2nd #reproction #menstruation https://t.co/Ab4oz2bewf

Jun 16, 2024 · 1,276 followers View post →
PH78-African Bias American
@Phillip05166897 · X

RT @Phillip05166897: @a_centrism These should suffice showing that using breast development and Menarche, global patterns don't relfect the…

Jun 11, 2024 · 1 share · 1,469 followers View post →
jay (nsfw sometimes)
@fruitiestpebb1e · X

@Lumiere3000 @bigpagaa @cindyxrellaz @Chaantellie i looked at your profile & the difference is probably bc of location “Median ages at Tanner Breast stage 2 (B2+) ranged from 8.8 to 10.3 years in USA & from 10.1 to 13.2 years in Africa” https://t.co/CZHZeZCgXm

Feb 16, 2024 · 3 likes · 3 followers View post →
Psicólogo Celestino González-Fernández ψ
@Tecnoestres · X

Worldwide Secular Trends in Age at #Pubertal Onset Assessed by Breast Development Among Girls @JAMANetworkOpen #CGFPsicología https://t.co/UtB1PCs6oC

Sep 3, 2023 · 2,908 followers View post →
jessy
@jessyrock25 · X

@WickedNFine ur the only one talking about fast and sexual lol... shes merely pointing out that she thinks kids are starting earlier than they used it, and yeah her evidence is purely anecdotal but there's a scientific basis for it as well https://t.co/HM716HvnxD

Aug 22, 2023 · 1 share View post →
jessy
@jessyrock25 · X

@MariCeeCee98 i dont think shes shaming anyone... she's merely pointing out that she thinks 8 is early (which it sort of is) and theres a scientific basis for what shes saying (puberty is starting earlier for kids than it used it) https://t.co/HM716HvnxD

Aug 22, 2023 · 3 likes View post →
jessy
@jessyrock25 · X

@gryindub @banter44 @mahogoniee @dykeiana @notcapnamerica @LindzManqele @ZEExx1991 studies show that over the last few decades the onset of puberty has decreased at about 3 months/decade https://t.co/HM716HvnxD

Aug 22, 2023 · 7 likes View post →
jessy
@jessyrock25 · X

@dykeiana @banter44 @notcapnamerica @LindzManqele @ZEExx1991 yes actually.... regardless i dont understand the controversy https://t.co/HM716HvnxD

Aug 22, 2023 · 5 likes View post →
Mo D.S.
@RealMoZDS · X

@pearlythingz Please educate yourself, studies are available. A simple Google search would help. Ethnicity, nutrition, and lifestyle have an impact impact. Check the Table and data in the study. https://t.co/TL7Mmx4hcJ

Jun 7, 2023 · 168 followers View post →
Frederick Zimmerman
@fredzannarbor · X

@george__mack It's also rather mind-boggling that there has been a global acceleration of puberty by 3 months per decade 1977-2013. https://t.co/VuqLEfMSwH. If that continues, do the math. By way of comparison, GHG warming has been 1.5C over 150 years.

Mar 31, 2023 · 2,585 followers View post →
JPMC
@jpmc79 · X

RT @CienciaDelCope: La pubertad empieza antes a nivel mundial. El inicio del desarrollo del pecho en las niñas–la telarquia– se adelanta un…

Jun 9, 2022 · 5 shares · 81 followers View post →
Ma. Teresa Mendoza
@Tonga1959 · X

RT @CienciaDelCope: La pubertad empieza antes a nivel mundial. El inicio del desarrollo del pecho en las niñas–la telarquia– se adelanta un…

Jun 9, 2022 · 5 shares · 1,209 followers View post →
Cultura General
@Qltura_Gneral · X

RT @CienciaDelCope: La pubertad empieza antes a nivel mundial. El inicio del desarrollo del pecho en las niñas–la telarquia– se adelanta un…

Jun 9, 2022 · 5 shares · 5,182 followers View post →
Enrique Coperías
@CienciaDelCope · X

La pubertad empieza antes a nivel mundial. El inicio del desarrollo del pecho en las niñas–la telarquia– se adelanta un año en cuatro décadas, según un estudio en la revista 'Jama Pediatrics'. https://t.co/f7TDgBQvNE https://t.co/bevApXVBiw

Jun 9, 2022 · 17 likes · 5 shares · 58,892 followers View post →
PH78-African Bias American
@Phillip05166897 · X

@a_centrism These should suffice showing that using breast development and Menarche, global patterns don't relfect the U.S Pattern. https://t.co/UUntCqUzdr https://t.co/Yrp6ogHtMW https://t.co/AzTS2yCLMl https://t.co/aeV9FJuARU

Aug 31, 2021 · 1 share · 1,469 followers View post →
JAMA Network
@JAMANetwork · X

RT @JAMAPediatrics: https://t.co/GNj0VtY9jA

Apr 21, 2020 · 1 share · 19,629 followers View post →
JAMA Pediatrics
@JAMAPediatrics · X

https://t.co/GNj0VtY9jA

Apr 21, 2020 · 1 share · 36,494 followers View post →
JAMA Pediatrics
@JAMAPediatrics · X

The medical community needs current and relevant data to redefine “precocious puberty,” because the traditional definition may be outdated, at least in some regions of the world https://t.co/BRJlAPAm6z

Apr 19, 2020 · 3 likes · 36,494 followers View post →
Program on Reproductive Health and the Environment
@UCSF_PRHE · X

A #SystematicReview in @JAMAPediatrics found that girls are experiencing #puberty earlier, which may have impacts on clinical diagnoses https://t.co/3VjBqOulzS?

Feb 21, 2020 · 2,525 followers View post →
asimedi
@asimedi · X

RT @RamonUgarte: La edad de inicio del desarrollo mamario en niñas (telarquia) ha disminuido una media de casi 3 meses por década entre 197…

Feb 17, 2020 · 1 share · 49 followers View post →
Ramón Ugarte
@RamonUgarte · X

La edad de inicio del desarrollo mamario en niñas (telarquia) ha disminuido una media de casi 3 meses por década entre 1977 y 2013. https://t.co/iNkcBPvbPF

Feb 17, 2020 · 2 likes · 1 share · 719 followers View post →
WHRIA
@whriaAU · X

Worldwide Secular Trends in Age at Pubertal Onset Assessed by Breast Development Among Girls https://t.co/32L7aLIvVk

Feb 13, 2020 · 136 followers View post →
Alexander Busch
@dralexbusch · X

RT @JAMAPediatrics: The medical community needs current and relevant data to redefine “precocious puberty,” because the traditional definit…

Feb 11, 2020 · 3 shares · 304 followers View post →
Karina ZapataC
@Kari_Zapata_C · X

RT @JAMAPediatrics: The medical community needs current and relevant data to redefine “precocious puberty,” because the traditional definit…

Feb 11, 2020 · 3 shares · 101 followers View post →
Allison Chung, Pharm.D, BCPPS, FCCP, FPPA(She/Her)
@lilhwn2 · X

RT @JAMAPediatrics: The medical community needs current and relevant data to redefine “precocious puberty,” because the traditional definit…

Feb 11, 2020 · 3 shares · 1,879 followers View post →
JAMA Pediatrics
@JAMAPediatrics · X

The medical community needs current and relevant data to redefine “precocious puberty,” because the traditional definition may be outdated, at least in some regions of the world https://t.co/wqeEO7EHC8

Feb 11, 2020 · 4 likes · 3 shares · 36,494 followers View post →
YPHSIG
@yphsig · X

This paper suggests secular trend of earlier onset to puberty continues. Worldwide Secular Trends in Age at Pubertal Onset Assessed by Breast Development Among Girls https://t.co/G8Qfferhku

Feb 10, 2020 · 1,379 followers View post →
Hormone Equilibrium
@HormoneEquilib · X

RT @emas_online: Girls begin #puberty almost a year earlier than in 1970s see Worldwide Secular Trends in Age at Pubertal Onset Assessed by…

Feb 10, 2020 · 1 share · 1,885 followers View post →
Tiziana Leone now on @tizianaleone.bsky.social
@tizianaleone · X

Worldwide Secular Trends in Age at Pubertal Onset Assessed by Breast Development Among Girls https://t.co/RSMREXYuxC

Feb 10, 2020 · 2 likes · 1,649 followers View post →
European Menopause and Andropause Society (EMAS)
@emas_online · X

Girls begin #puberty almost a year earlier than in 1970s see Worldwide Secular Trends in Age at Pubertal Onset Assessed by Breast Development Among Girls: A Systematic Review and Meta-analysis https://t.co/MGDVZuBdcI

Feb 10, 2020 · 1 like · 1 share · 1,922 followers View post →