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Precocious puberty in girls begins before the age of 8. The youngest mother on record is Lina Medina , who gave birth at the age of either 5 years, 7 months and 17 days [ 11 ] or 6 years 5 months as mentioned in another report.
Precocious puberty is when signs of sexual maturity occur earlier than age 8 in a girl and age 9 in a boy. (Photo: Getty Images) (Getty Images/iStockphoto) Every child goes through puberty, but ...
Precocious puberty on the rise. In the mid-19th century, girls had their first periods — which typically come about two years after they begin to show signs of breasts or pubic hair — at age ...
[2] [3] Thelarche typically occurs between the ages of 8 and 13 years with significant variation between individuals. [4] [5] [1] However, the initial growth of breast tissue occurs during fetal development. It is usually the first sign of puberty in females (less commonly, it can be the second sign, after pubarche).
Another study, which was published in 2024, found that the average age that girls had their first periods decreased from 12.5 years old in 1950 to 1969 to 11.9 years old in 2000 to 2005.
Puberty is considered delayed when the child has not begun puberty when two standard deviations or about 95% of children from similar backgrounds have. [7] [8] [9]In North American girls, puberty is considered delayed when breast development has not begun by age 13, when they have not started menstruating by age 15, [2] and when there is no increased growth rate. [8]
Two of the most significant differences between puberty in females and puberty in males are the age at which it begins, and the major sex steroids involved, the androgens and the estrogens. Although there is a wide range of normal ages, females typically begin the process of puberty around age 10½; males at ages 11½—12.
Though children across races are beginning puberty at younger ages, research has shown that Black girls are more than twice as likely as white girls to start puberty early. Today, puberty begins ...