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Answer» Girls - During puberty your ovaries get bigger and your body will start to produce two hormones - oestrogen and progesterone.
- Oestrogen causes your breast to grow and helps your vagina, uterus and fallopian tubes to develop.
- It also makes you grow taller and also changes the way fat is stored on your body making your waist, hips and buttocks more obvious.
- After puberty, oestrogen and progesterone control your menstrual cycle or period.
Boys - For young men, the hormone testosterone is the hormone that starts development from boy to man.
- Testosterone is the major male sex hormone and it is produced in the testes.
- Testosterone levels rise significantly during puberty.
- When levels are high enough, testosterone starts the production of sperm, causes the chest and shoulders to broaden and causes facial hair to grow.
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