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If you’re a parent and are noticing what seems like the early signs of puberty in your child, you may be concerned about his or her health. Here’s what you need to know about precocious puberty.
[18] While more girls are increasingly entering puberty at younger ages, new research indicates that some boys are actually starting later (delayed puberty). [ 21 ] [ 22 ] "Increasing rates of obese and overweight children in the United States may be contributing to a later onset of puberty in boys, say researchers at the University of Michigan ...
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 16 ...
Research has showed that the average age of starting puberty continues to drop over time: One study published in 2020 shows that the average starting age of puberty for girls has decreased by ...
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]
[17] [18] The point at which a child becomes an adolescent is defined by the major onset of puberty. [2] [15] However, in some individuals (particularly females), puberty begins in the preadolescence years. [19] [20] Studies indicate that the onset of puberty has been one year earlier with each generation since the 1950s. [21]
Although there is a wide range of normal ages, females typically begin the process of puberty around age 10½; males at ages 11½—12. Puberty generally ends between 15—17 for females and 16–17 for males. [1] [2] [3] Females attain reproductive maturity about four years after the first physical changes of puberty appear. [13]
Starting puberty significantly early — younger than age 8 in girls, 9 in boys — may have health effects lasting into adulthood, including higher risks of breast cancer, diabetes and heart disease.