During most breast augmentation surgeries, the implant is actually placed between your chest wall and your breast, and those pectoralis muscles we mentioned before act as a barrier. The incision is typically done under the breast instead of cutting away the nipple. This way, the implant doesn't interfere with the breast ducts or mammary glands, which produce and carry the milk out of the nipple. However, if the breast augmentation does involve a nipple incision, this can cut and kill the nerves that trigger milk flow during nursing. However, this is less common; most breast augmentation surgeries done today will allow for breastfeeding in the future.