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Does everyone develop breasts at the same time?
No. It is normal for some girls to start to develop breasts when they are 7 or 8 years old, while others don't start until they are 12 or 13. Every girl has her own "clock" that her body follows. For example; girls who do gymnastics, dance, track, or some other very active sport may go through puberty at a later age. Even if your development is normal, it can be hard if you seem to be either the first or the last one to develop breasts. Talk to a parent or an adult that you trust and tell him/her how you are feeling. If you develop early, remember that other girls will soon catch up.
It is a good idea to talk with your health care provider if you have not started any breast development by the time you are 13 years old.
Your breasts start growing when you begin puberty. During puberty the hormone levels in your body change. This causes your breasts to develop and your periods to start. Lots of things influence when you are going to begin puberty and develop breasts, including heredity (the way certain characteristics are passed down from generation to generation), weight, exercise, nutrition, stress, and chronic illnesses.
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Updated: 4/21/2010
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