Breast implants maintain their size regardless of weight loss. Major sagging due to weight loss is unlikely, but may be more likely in older patients with lower skin quality. Young patients can usually undergo weight fluctuations and pregnancy without major effects on their implants. Patients should note that breast implants cannot prevent sagging. Therefore, as they age and the breasts naturally begin to sag, the implants will follow. Gummy bear breast implants are less likely to, but patients should expect and understand this before undergoing breast augmentation surgery.