What should breast cancer do? It must be actively treated. Surgery plus chemotherapy, even if it can't be cured, its five-year and ten-year survival rate is also very high. To prevent it, you should have a physical examination every year, do breast color Doppler ultrasound, and touch and observe yourself at ordinary times to see if there is a lump. If there is a lump, you should go to the hospital in time. If you find it early and treat it early, you should have surgery to remove it. Some people have their breasts removed in advance, just like Angelina Jolie, but she has a family history and is a high-risk group. Most people don't do this.