Overall, breast hyperplasia is a benign disease and not severe, so there is no need for excessive anxiety. However, it should definitely not be taken lightly. Studies have found that about 2% to 3% of cases with breast hyperplasia may develop into cancer, and the rate of malignant transformation in cystic breast hyperplasia is 3 to 5 times higher than in other women. If you do not control factors that cause breast hyperplasia, such as endocrine disorders, high-fat diets, smoking, drinking, hypertension, and diabetes, then the breast ducts and epithelia being chronically stimulated by these factors could potentially become cancerous. The progression from breast hyperplasia to breast cancer is a lengthy process, undergoing four stages: hyperplasia → atypical hyperplasia (precancerous) → in situ carcinoma → invasive carcinoma. Therefore, breast hyperplasia should be taken very seriously, with efforts made for early examination, early detection, and early treatment. This is especially important for those with a family history of breast cancer or who belong to families with a high incidence of cancer.