Puberty is the period during which visible sexual characteristics develop and sexual organs mature. In girls, puberty usually starts between the ages of 10 and 14 and lasts for about 3–4 years. Puberty can occur up to 2 years earlier in black people, and girls tend to enter puberty about 1–2 years before boys.
From the 2010 revision of the Complete Home Medical Guide © Dorling Kindersley Limited.
The subjects, conditions and treatments covered in this encyclopaedia are for information only and may not be covered by your insurance product should you make a claim.