Onset of puberty in girls has fallen by five years since 1920

No one is sure what is causing the change

Puberty Starts Earlier Than It Used To. No One Knows Why. - The New York Times

Generation Z - Wikipedia

Why are today's young girls getting their first periods at earlier

Eric Bakker Naturopath

Why Are More Children Going Through Puberty At A Younger Age? - Texas A&M Today

Timing of puberty in boys and girls: Implications for population health - ScienceDirect

Can you believe Foots Walker is 72 years old? : r/clevelandcavs

Onset of puberty in girls has fallen by five years since 1920

Generation Z - Wikiwand

Black Women and Infertility Resilient Sisterhood Project

Half of women are now childless at thirty for the first time ever

11-Year-Old Pregnant Girl Reported To Be UK's Youngest Mom

To treat or not to treat: puberty suppression in childhood-onset gender dysphoria

Early Puberty for Girls: Causing More Harm than Good? - Asheville Academy