Puberty is when a child's body begins to mature. They produce hormones which are substances from the endocrine system. Some hormones are produced by the hypothalamus and pituitary gland. Certain hormones cause the ovaries to grow in girls and testicles in boys. Women make estrogen and men make testosterone. These changes cause maturation and secondary sex characteristics. boy with facial hair girls develop breasts And pregnancy can occur in sexually active women. Late puberty means puberty. Doesn't start at normal time Puberty usually begins between the ages of 7 and 13 for girls. and between the ages of 9 and 15 for boys.
