The disadvantages of cutting off breasts mainly include physiological and psychological harms. 1. Psychological harm: breast is one of the female sex organs, after cutting off the breast, there is a large surgical scar on the chest, especially for the patients who cut off one side of the breast, in the appearance due to the lack of breast, which affects the aesthetics. It will make the patients have low self-esteem and even depression. 2. Physiological hazards: If one breast is removed, there may be an imbalance in weight between the two sides of the body, which may lead to scoliosis and low back pain over time. Some patients may also experience complications such as pain at the mastectomy incision. Meanwhile, if the patient is a woman of childbearing age, breastfeeding may be affected after mastectomy. It is recommended that patients go to the hospital, complete all the examinations and undergo mastectomy if there are indications for mastectomy surgery, and be operated by a specialized physician.