Breast cancer is a malignant tumor that occurs in the glandular epithelial tissue of the breast. It is divided into various pathological types and has a strong heterogeneity. Breast cancer is one of the most effective solid tumors, and there are many issues that breast cancer patients need to understand in terms of treatment and health care. What are the daily dietary and medication considerations for breast cancer patients? Breast cancer patients, especially those who are estrogen receptor (ER) and/or progesterone receptor (PR) positive, should avoid eating foods containing estrogen and progesterone and avoid using estrogen drugs and drugs that promote the secretion of estrogen and progesterone because estrogen and progesterone can promote the growth of breast cancer cells. For postoperative patients, special attention should be paid to dietary and drug factors to prevent tumor recurrence and metastasis. Since dairy products may contain lactogen, postoperative patients should be cautious in using dairy products. As for drugs, the common drugs that can promote the secretion of lactogen are morpholine, famotidine, spironolactone, etc. The pros and cons of diet need to be weighed. For patients with advanced disease, dairy products are one of the good foods to improve their nutritional status; and medications, estrogen and progestin are also used as one of the endocrine treatments for patients with tumors in some cases. Treatment is multifactorial and should be arranged by the clinician. How to self-examine the breast? Self-examination of the breast is mainly performed by breast palpation, which has certain limitations but is practical. The best time to examine the breasts is 7-10 days after menstruation. The order of breast examination is upper outer quadrant→lower outer quadrant→lower inner quadrant→upper inner quadrant, and the areola should not be missed. Palpation can be performed in the supine or seated position, and the arm should be raised in the seated position when palpation is not performed. When palpating, use your fingertips and apply light pressure, but do not use excessive force; if palpation is not clear or if there is a suspicious mass, seek medical attention. In addition, you can observe whether the bilateral breasts are symmetrical, whether there are any changes in the breast skin (such as redness, swelling and orange peel-like changes), whether there is nipple overflow and bleeding, etc. 3. How to perform functional exercise after breast cancer patients’ surgery? What should be noted for the affected limb? Family members of patients should assist patients to perform large and small joint exercises or upper limb massage after surgery, which can prevent upper limb swelling. Patients should be trained to grip and release their hands and bend their wrists early after surgery. 1 day after surgery, they can be assisted to exercise flexion and extension of the elbow and <30° forward flexion and <15° back extension of the shoulder joint. On the 4th day of surgery, the upper limb of the operated side could be used to wash and eat, and to practice touching the opposite ear. After the incision heals (usually after 7 days), shoulder exercises (such as hair combing, upper limb lifting and swinging back, wall climbing, etc.) can be performed gradually, 3-4 times a day for 20-30 minutes each time, but the shoulder joint should not be abducted within 10 days of surgery. The application of the affected limb for weight-bearing should be avoided, and the application of the affected limb for receiving infusion and blood pressure measurement, blood collection, etc. should be avoided. What should be noted in endocrine therapy? 1. Adhere to endocrine therapy as prescribed by the doctor: after endocrine therapy, many patients have menstrual disorders or even interrupted menstruation and menopausal symptoms, which should not interrupt endocrine therapy. 2, female hormone testing during endocrine therapy: during endocrine therapy, female hormone testing can understand the hormone level and the efficacy of endocrine therapy. If pre-menopausal women reach the standard of menopause during the treatment (judged by clinicians, single test results cannot determine whether menopause), endocrine therapy drugs can be replaced. Therefore, patients receiving endocrine therapy should not forget to undergo female hormone testing during the follow-up consultation. 3. Patients receiving tamoxifen treatment should follow the doctor's instructions to check the endometrial thickness regularly. 4. One of the adverse effects of endocrine therapy is bone loss, so you should follow the doctor's prescription for bone density test and receive the corresponding treatment during the treatment process. V. What are the benefits of wearing prosthetic breast after mastectomy? Prosthetic breast not only can maintain the aesthetic appearance, but also can maintain the body balance, prevent the sloping neck, scoliosis and soft tissue pain caused by anatomical structure changes. You should choose a regular prosthesis and a suitable bra. At present, prosthetic breast is a suitable choice for most women in China. 6. How long should breast cancer patients use contraception after surgery? Pregnancy may contribute to the recurrence of breast cancer. Contraception is recommended for more than 5 years. If there is a need for pregnancy, you should consult your doctor in detail. If I choose breast reconstruction after breast cancer surgery, what time should I choose to have it? Breast reconstruction can maximize the patient's quality of life close to the original state and is now accepted by more and more patients. Studies have now confirmed that breast reconstruction does not increase the risk of local recurrence and distant metastasis of breast cancer. Immediate breast reconstruction after radical breast cancer surgery has many advantages, but postoperative complications may delay radiotherapy and radiotherapy may exacerbate surgical complications, so deferred breast reconstruction is recommended for those who need postoperative adjuvant therapy. The specific reconstruction time should depend on the individual patient's condition, based on the absence of tumor recurrence and metastasis. VIII. How do we look at breast enlargement? Mammary gland hyperplasia includes several types, only some of which have the risk of cancer and have to undergo a certain evolution time. Therefore, there is no need to worry too much about mastocytosis. There is no effective treatment for mastocytosis. Mammary gland hyperplasia can be examined by breast ultrasound or mammography once in 1-2 years, and the specific follow-up time will be arranged by the clinician. Do not massage your breasts or take drugs at will. 9. How to prevent breast cancer in daily life? In addition to regular physical examination and self-examination of breasts, you should avoid the intake of exogenous estrogen, especially during menopause, and use estrogen cautiously. When applying estrogen and progestin to treat gynecological diseases, the amount and ratio of medication should strictly follow the doctor's prescription. Avoid high-fat diet, do not smoke, do not abuse alcohol, do not stay up late, do moderate physical exercise, and maintain a healthy lifestyle. Those who are at high risk should be professionally evaluated to determine whether they need to take tamoxifen to prevent breast cancer. X. Can breast augmentation cause breast cancer? There is no scientific data to confirm that breast augmentation can cause breast cancer, but Omnidene (polyacrylamide hydrogel), which has been used for breast augmentation, has been proven to be toxic and can cause breast infection and hard nodes, and has been banned from use. Other materials have not been reported yet. Promote women to advocate healthy beauty and natural beauty.