I. Who are prone to breast cancer? Patients who have previously suffered from breast cancer or have a history of benign breast tumors; 2. Those who have a family history of breast cancer, especially those who have more than one immediate first-degree relative (mother, sister) who have suffered from breast cancer and those who have breast cancer-related gene mutations. 3. Women whose first pregnancy is older than 30 years old have a slightly higher risk of breast cancer than women who have never given birth; 4. Women who eat too much animal fat and are overweight after menopause; 5. Women with certain chronic breast diseases (such as atypical ductal epithelial hyperplasia, papillomatosis, etc.); 6. Women whose first menstruation is before the age of 12 or whose menopause is after the age of 55; 7. Women who apply estrogen to control menopausal symptoms Women with symptoms have a moderately increased risk of breast cancer after many years; 2. How to detect breast cancer early? There are no other preventive measures to prevent the occurrence of breast cancer other than preventive mastectomy. Therefore, it is important for women at high risk of breast cancer to take measures for early detection of breast cancer so as to obtain the best treatment results. Early detection of breast cancer is currently advocated by breast radiography, clinical examination and self-examination. Mammography is the only clinically proven breast screening tool, especially for postmenopausal patients, that can detect subclinical breast cancer one to two years before the onset of clinical symptoms and can reduce the mortality rate of breast cancer in the population by 30%. Clinical examination is an effective complement to mammography screening, suitable for women of all ages, and can solve some practical problems. Self-examination of the breast is easy to perform and suitable for women of all ages, but its effectiveness varies depending on the patient’s education level and the teaching of the preceptor. Prevention strategies for women at high risk of breast cancer First of all, you should consult with your doctor or relevant specialist whether you have any risk factors for breast cancer and what is your chance of developing breast cancer in the next few years. You should then choose preventive measures according to your risk level, and of course you must refer to your physician’s advice and recommendations. If you choose preventive mastectomy, it is important to seek a second specialist’s opinion, especially to understand the physical and psychological changes you will face after bilateral mastectomy; you can also seek the help of a plastic surgeon for your breast reconstruction. For most women, close monitoring for early detection of breast cancer is a good recommendation, and all you have to do is a monthly breast self-examination, a clinical examination every 4 to 6 months and a mammogram every 1 to 2 years from the age of 40. Of course you can take more aggressive, but non-disfiguring, preventive measures such as taking triamcinolone and participating in other ongoing chemoprevention trials. The final advice is that if you do unfortunately develop breast cancer, you should face the reality and treat it aggressively, as it is still curable in 2/3 of cases.