Breast cancer is a malignant tumor in the breast, not a contagious disease, so eating or living together with breast cancer patients will not cause breast cancer infection. Patients with breast cancer should eat as light a diet as possible and eat more nutritious food. In addition, after surgery, patients should come to the hospital for regular review, which is usually required for five years. Of course, after five years, patients should also come to the hospital for check-ups, because with the current treatment, the overall survival period of breast cancer patients is significantly longer, with many patients surviving for five or even ten years or more.