The idea of a reaching puberty between ages 10 and 13 is no longer a reality for millions of American girls, says a new study published in the Pediatrics journal. Nowadays, parents and doctors are seeing girls reaching puberty as young as 7 or 8 years old... Here's what you had to say: Rhonda commented Facebook: "What a scary thought! That means they can get pregnant sooner." Valencia wrote Facebook: "Hormones in the food. I know little girls that have reached their womanhood at 10 years old."