When a young person reaches a certain age, their brain releases a special hormone called the gonadotropin-releasing hormone or the GnRH. This hormone is responsible for releasing two more puberty hormones into the bloodstream. The first is the luteinizing hormone, which triggers ovulation in girls and stimulates testosterone production in boys. The second is the follicle-stimulating hormone, which helps regulate the growth and development of the reproductive processes of the adolescent body. Both guys and girls have these hormones.
For guys, these hormones are responsible for the production of testosterone and sperm in the testes. Testosterone is responsible for most of the changes in a male’s body during puberty, including appearance and growth.
In girls, the hormones target the ovaries and they help produce another hormone called estrogen. Estrogen is responsible for regulating the menstrual cycle and keeps cholesterol levels in control.
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