Puberty usually starts between ages 9 and 15 in boys and 8 and 13 in girls. Timing varies widely, so friends may develop sooner. In boys, puberty begins when testosterone rises. One of the first signs ...

Puberty is a key stage in the transition from childhood to adulthood. It usually starts when a person is in their early teens. It involves physical, psychological, and emotional changes, and each ...

Precocious puberty is puberty that begins earlier than usual. An underlying condition may cause it, but other people experience early puberty for no apparent reason. Even when puberty occurs early ...