What Would Cause my Breasts to Shrink?

As a teen I was a 32B, I was athletic back then with a very low % of body fat. I am now 30 and lost appx 30 lbs in the last year. I'm nearly back at my teenage weight and now an A cup. My body fat % today is quite a bit higher now, so this doesn't make any sense to me.

Doctor Answers 30

Breast changes with age

Unfortunately, what you are experiencing are the normal changes that occur in the breast with age.  When you are younger, your breast has more fibrous and dense tissue.  As you age, this becomes more fatty in consistency and you start to lose some of the structural support in the breast.  Also, where your body decides it will store fat also changes with age and may not necessarily go where we want it.  The same thing goes for facial aging, where we lose volume in our face as we get older despite being the same weight.

If you are desiring fuller breasts but not necessarily implants, then you may want to consider fat grafting where you borrow fat from one part of the body where you don't want it and add it the area where you want more volume.


Breast size will only change with your weight after they are fully developed. This must be your natural breast volume. You may do well considering augmentation

Norman Bakshandeh, MD, FACS
New York Plastic Surgeon
4.9 out of 5 stars 14 reviews

Shrinking breasts

You are observing typical effects of aging on the appearance of your breasts. As you are developing, the breasts form with more fibrous and dense tissue. The breasts will become more fatty in consistency as you age and become less supported.

Kris M. Reddy, MD, FACS
West Palm Beach Plastic Surgeon
4.5 out of 5 stars 36 reviews

Breast size change with age

The breast is composed of gland and fatty tissue.  Weight changes would influence the fatty component and age/hormonal change would influence the glandular component.  Compared to your teenage years the natural shift in fatty tissue vs glandular tissue percentage is understandable and the change after 30lb weight loss expected.  I think at this point, you could consider augmentation mammoplasty if size increase is desired.

Michael A. Marschall, MD
Chicago Plastic Surgeon
4.0 out of 5 stars 9 reviews

Weightloss results in breast volume loss? The story checks out!

Hi 8353anon, You basically answered your own question here! You lost 30lbs in a year! I'm sure you lost weight all over and your breast are just one of the areas women can lose/gain fat volume. In addition to this change, your breasts (and entire body) are not the same as they were when you were a teenager. You are 30 years old, you can't possibly expect your body to be the same as it was during a growth phase of life. (And for you it sounds like a time when you were much more athletic and active than you are now.) Everything has changed. And you are going to continue to experience a lifetime of changes dues to hormones, stress, lifestyle and genetic pre-disposition. This is one of many. Congratulations on your lifestyle change to get healthier. You will benefit from years to come. If you want more breast volume, speak with a board certified plastic surgeon. Best of luck to you!

William Aiello, MD
Orange County Plastic Surgeon
4.9 out of 5 stars 30 reviews

Breast Volume Loss

It is not uncommon for breasts to shrink or get larger with changes in weight.  It is not necessarily related to Body fat % because that relates to the whole body, not just the breasts.  So what you are experiencing is normal.If your breasts have gotten smaller with weight loss, they will likely get larger with weight gain.  Your other alternative is a breast augmentation.

Barry M. Schwartz, MD
Weston Plastic Surgeon
4.0 out of 5 stars 4 reviews

Why are my breasts shrinking??

So sorry that you are dealing with this...  In general, women's breasts stay about the same with regards to both volume and shape - unless they gain/lose weight, or get pregnant.  Unfortunately, after the above life changes occur, one's breasts can certainly shrink/grow.  That being said, surgery can certainly assist in bringing you back closer to a former stage...  Best of luck!

What Would Cause my Breasts to Shrink?

It's a great question. Many women notice changes in their breasts with time. Size of the breast may increase or decrease with medication, changes in weight, pregnancy, or breast-feeding.

The only reliable way to increase the size of the breasts is with breast augmentation surgery. This is typically performed using an implant that is placed behind the muscle. Being plan can be filled with saline or silicone.

The recovery is pretty straightforward. Most patients return to day-to-day activities after 24 hours. Cardiovascular exercises are resumed at four weeks. Chest exercises are resumed at six weeks.

What Would Cause my Breasts to Shrink? #breast size changes #age

Thank you for your question!  Unfortunately, as we age we notice changes to many regions of the body, especially the breasts.  Whether it's due to having children, aging, changes in body weight, or structural changes within the breasts, your anatomy will change over the years.  Typically you will notice the breasts becoming softer, less perky, and smaller with loss of volume.    Not only will the breasts seem to lose volume, but relatively often the breasts begin to sag.  This is why breast augmentation with or without a breast lift are some of the most common procedures a plastic surgeon performs.   It is always recommended to search for a Board Certified Plastic and Reconstructive Surgeon in your area to consult with. 

I hope this helps!

Shrinking of Breasts

Thank you for your question.  What you're experiencing right now is not uncommon since the tissues in the breasts tend to be less dense as people age.  Loosing weight can also be a reason why your breast size is changing.  Best of luck. Dr. Michael Omidi

An in-person exam with a board-certified plastic surgeon is the best way to assess your needs and provide true medical advice.

Michael M. Omidi, MD, FACS
Beverly Hills Plastic Surgeon
5.0 out of 5 stars 57 reviews

These answers are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.