I'm 13 yrs old. Have my breasts stopped growing?

Question

My breasts are an A cup. I feel like during my period, they get bigger, and then after my period I feel like they shrink.

Nelson Castillo, MD · Answer

Thank you for your question.  Although women today are developing at younger ages, it is unlikely that your breasts have fully developedat 13.  Most women can continue to develop into their late teens or early 20's.  It's difficult to do, but be patient, and give it a few years to see if you have a growth spurt.

Angela Champion, MD · Answer

Don't worry, at 13 years old, you still have a few more years for your breasts to continue to grow.  Your breasts may continue to grow up until 19 or 20 years old.  Keep in mind that your breasts will continue to change over your life time due to changes in hormones, so for example, around your period, they may swell, look larger, feel heavier or be sensitive.  Also weight loss and weight gain may also cause your breasts to change in size. ac

Jaroslaw Tribull-Potapczuk, MD, PhD · Answer

Yes, such kind of "ups and downs" are quite normal. Apart of that, beeing 13 your breasts have still a good chance to grow during the next few years. So please, do not worry.RegardsDr. Tribull

Brian Coan, MD, FACS · Answer

Thank you for sharing your question.  At just 13 years old you are still quite young and it is very unlikely your breasts have stopped growing. It is completely normal for breasts to feel more full, tender and sometimes even sore during or before periods and menstrual cycles. Remember that breasts can vary in shape and size and it is not uncommon for your two breasts to look slightly different.  I hope this has been helpful and wish you all the best.Brian S. Coan, MD, FACS

Connie Hiers, MD, FACS · Answer

Most young ladies have reached their breast growth between 15 and 16, however, a few may take until 20-21. After 21, breast growth is usually due to pregnancy or weight gain. Hormones do play a role in breast swelling and tenderness, especially around your period.

Joseph L. Grzeskiewicz, MD, FACS · Answer

While the age at which young ladies begin to develop breasts or get their periods seems to get younger, I can virtually assure you that at 13 years old, you have just begun the growth of your breasts, and over the next several years your body's hormone signals will be undergoing changes that will affect your breasts.  This is why you notice fullness, or maybe even tenderness, in the breasts around the time of your period.  The reason why a period happens is because the body creates different hormone signals at that time of the month, and some of those affect the breast tissue.  Until those hormone signals stabilize for the long term, and this probably won't happen until you are around 17 or 18 at the youngest, the breasts may continue to change.  Bear in mind too, that the breast is also comprised of fat tissue as well as glands, and that can increase or decrease depending upon a lot of factors too, like your genetics, your dietary intake and exercise, and hormonal signals as well.  Some ladies actually report that their breasts continued to change into their early twenties.  This is a large part of the reason why we don't like to do elective cosmetic breast surgery on girls younger than 18.

Jeremy A. Benedetti, MD · Answer

Hello, at 13 years old you are still going through puberty. Your breast can continue to grow until about 17 or 18 years of age.

I'm 13 yrs old. Have my breasts stopped growing?

Answers (7)

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