Breast hyperplasia is mainly related to endocrine disorders, mental factors, bad living habits and bad dietary habits. 1. Endocrine disorders: various hormone secretion disorders may lead to breast enlargement, such as estrogen and progesterone ratio imbalance. Elevated prolactin leads to the development of breast hyperplasia. Irregular menstruation leads to decreased secretion of luteinizing hormone, which leads to breast enlargement. 2. Mental factors: long-term mental tension, mood swings and other adverse emotional factors can lead to breast enlargement. 3. Bad life habits: unhealthy sex life, abortion, not having children or having children over 30 years old will hinder the health of the breast gland and lead to breast enlargement. 4. Bad dietary habits: Long-term consumption of high-fat, high-energy foods, as well as smoking and alcohol abuse, long-term use of estrogenic drugs can often induce breast enlargement. After discovering breast enlargement, you need to go to the hospital in time and standardize the treatment under the doctor’s guidance.