If you lose more weight after a breast reduction/lift surgery, will the new shape that was created be ruined?

Thank you for your question. If you do lose weight after surgery this will reduce the amount of fat within the body and the breast area as well depending on how much is lost and will possibly cause sagging. It is recommended to stay at a stable weight after surgery. Be sure to discuss your concerns with your surgeon.

Losing over 20 lbs tends to affect the results in a detrimental fashion.  This has some variability as a 20 lb weight loss in a 220 lb woman may have less of an effect than a 20 lb weight loss in a 120 lb woman. Most PS recommend that you maintain a stable weight for several months prior to surgery so if you plan to lose additional weight, do it now for the best results.

The best time for surgery is the point at which you have reached a healthy, happy, stable weight (preferably with a BMI < 30). This will help you reach the optimal result. 
However, that is not to say you cannot have surgery prior to that point. You must be willing to accept the possibility (i.e. likelihood) of the need for further surgical revision following further (significant) changes such as those seen after pregnancy or with continued weight fluctuation.
As always, discuss your concerns with a board certified plastic surgeon (ABPS).
Donovan Rosas MD
Board Certified by the American Board of Plastic Surgery
Member: American Society for Aesthetic Plastic Surgery, American Society of Plastic Surgeons
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