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Changes to your breasts

Illustration of brasHaving breasts is such a new thing for teen girls. When you start developing breasts, it is common to spend a lot of time thinking about how you look and how you compare to others. You may wish your breasts were bigger, or you may wish they were smaller. And there may even be times when you can’t decide which you would prefer. The important thing to keep in mind is that every woman is different in the shape and size of her breasts. Your breasts don’t need to look like your friend’s breasts or a magazine model’s breasts.

It is also important to know that it is very common for your two breasts to be different sizes – especially as you first start developing. Other people can’t tell that your breasts are different sizes. Also, exercises, vitamins, herbal teas and creams, will NOT change the size of one or both of your breasts.

Throughout puberty, you might see or feel lumps and other changes in your breasts. During your period, they may even feel a little tender or sore. Most of the changes your breasts will go through are normal. To get used to these normal changes, you can do regular breast self-examinations (BSE). The best time to do it is about a week after your period starts. Let your doctor know if you find a lump or pain that you are not sure about. But keep in mind that harmless lumps are common in young women. Your doctor can show you exactly how to do a BSE.

While these instructions should not replace a doctor’s visit, you can learn “How to Perform a Breast Self-Examination”.

Should I wear a bra? What about during sports?

Having breasts is a normal part of being a woman and you do not have to change your life because of them. If you find that exercise is not as comfortable, try wearing a sports bra with a snug fit for support. If you are wearing bras every day and are having a hard time finding one that fits you well, check out “Finding the Right Bra” for a helpful guide to finding the support you need.

Content last updated August 18, 2008

U.S. Department of Health and Human Services, Office on Women's Health.

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