What is the youngest age to go through puberty

Most girls attain their peak height by age 16, but some may continue growing through age 20.Puberty is considered to be early in boys before age 8 and girls before 9 years old.In boys, testicular enlargement is the first physical manifestation of puberty (and is termed gonadarche).That's up to two years earlier than decades ago.In 1999, it was assumed that only about 5 percent of girls were starting to go through puberty prior to age 8, while more contemporary research shows that by age 7, 15 percent of girls had early.

Today, that number has decreased to 12 or 13 years.For example, at the turn of the 20th century, the average age for an american girl to get her period was 16 or 17.January 21, 2014, 2:15 pm.Issac notes black and hispanic girls tend to start puberty earlier than white girls — at age 7 1/2 instead of 8.2 for girls, the average age for puberty to start is 10 1/2 years, for boys, it begins at an average age of 11 1/2 to 12 years.

Some girls and boys may develop certain signs of puberty at a young age, but not others.Puberty usually ends by about age 15 or 16 in boys.The average age of onset of menstruation is about 12.5 yrs, however in case of precocious puberty it can vary and be as early as a year or two.Sometimes there is a medical reason for early or delayed puberty.On average, girls will begin puberty around age 11 and boys around age 12.

The testicles are the parts of the body that make a hormone called testosterone.(the study couldn't determine why.) boys typically go through puberty from ages 9 to 14, with the entire process taking three to four years.Furthermore, when there are no signs of puberty by age 14, this is known as delayed puberty.