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

No one is sure what is causing the change

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

PDF) Evidence from Finland and Sweden on the relationship between early-life diseases and lifetime childlessness in men and women

One Family's Battle to Avoid Added Hormones – Five Star Home Foods

Why did people start puberty so late back then? My mom started

Lowered Age of Puberty Linked to Obesity in the Young: Study

I'm a 16 year old guy, with puberty pretty much taken its course

Junk food causing puberty to hit at age 6: experts – India TV

Normal and Abnormal Growth and Pubertal Development

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

Why do some people end up looking younger for their age later on