One of the most common risks is capsular contracture, which is the formation of scar tissue that can change the shape of the breast implant. This may require additional surgery to correct. Breast pain is also a possible complication, which can range from mild to severe and may last for a significant period.

Infection is another concern. Signs of infection include fever, redness, warmth and swelling in the breast area. If left untreated, it can lead to more serious problems. Changes in nipple and breast sensation can occur, with some patients experiencing numbness or hypersensitivity.

Implant position changes and leaks or tears are also risks. Implants may shift out of place, affecting the appearance of the breasts. Silicone implants can leak, and saline implants can rupture, both of which may require implant removal or replacement.

There's also a rare but serious risk of breast implant-associated anaplastic large cell lymphoma (BIA-ALCL), especially with textured implants. Additionally, some people with breast implants report systemic symptoms like tiredness, memory loss and joint pain, although the link to implants is still being studied.