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Puberty in Girls

Medically reviewed by Last updated on Jun 5, 2024.

What is puberty?

Puberty is a major change that happens in your body. It is a time when you grow very fast and your body starts to change into an adult body. Puberty usually starts between ages 8 to 13 in girls, but it may start earlier or later. You may not go through puberty at the same time or in the same way as friends your age do. Puberty usually ends by about age 14 in girls.

What will happen to my body during puberty?

What is menstruation?

Menstruation is your monthly period. It happens about once each month and lasts for 2 to 7 days. Menstruation may start at any time during puberty, but it usually happens after you have other body changes first. It may start after you begin growing taller or after your breasts begin to develop. Menstruation is a normal sign that your body is becoming an adult woman's body. Here are some things you should know about menstruation:

How will I feel during puberty?

Care Agreement

You have the right to learn about puberty and to help plan your care. Talk with your healthcare provider if you have questions or concerns about the changes you are going through. You always have the right to refuse care.The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

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Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.