For breast hyperplasia, it is advisable to consume more vitamins and high-fiber foods, as well as fruits and vegetables. Although its exact mechanism is not clear, it has been confirmed that fiber can inhibit breast cancer and colon cancer. Numerous studies also suggest that vitamin A plays a protective role in breast cells. It is beneficial to exercise frequently, and to eat less food high in estrogen, such as soy isoflavones, soy milk, and poultry. Additionally, it is wise to reduce alcohol consumption and smoking, as drinking can increase the levels of estrogen in the body, thereby raising the risk of breast cancer in women.