At present, the exact cause of breast diseases is not completely clear, according to medical data analysis, mainly related to lifestyle, environmental impact and dietary factors, and also related to genetics, endocrine, viruses, etc. The incidence of family history of breast diseases is higher than those without family history. The high incidence of breast disease may also be related to increased work pressure and fast pace of life, some women are mentally overburdened and physically and mentally exhausted, resulting in endocrine disruption, which can easily cause breast disease. Breast diseases are getting younger and younger. Among those who go to the hospital for breast examination, women aged 35 to 50 account for more than 80%, most of them go to the hospital for examination because they unintentionally feel a lump in their breast or breast pain, and quite a few women have never had a breast examination. Common breast diseases include lobular hyperplasia, cystic hyperplasia, fibroadenoma, mastitis, intraductal papilloma and breast cancer, among which breast hyperplasia, breast fibroid and breast cancer are more common. Early examination and early detection is the key to prevent breast disease Monthly breast self-examination: Within 7-10 days after menstruation, face the mirror and examine yourself. First, check the appearance of your breasts to see if there are orange peel-like wrinkles and dimple-like changes in the skin, and if the nipples are sunken, retracted or elevated. Then put your fingers together on one side and place them flat on your breasts, touch them gently with your fingertips, either in a clockwise direction or in a counterclockwise direction, and check the four quadrants of upper outer, lower outer, lower inner and upper inner in turn, and finally check the nipple areola area to observe whether the nipple is bleeding fluid or brown, dark red or yellowish fluid, etc. Be careful not to press heavily. If abnormalities are found, you should go to the hospital for examination and treatment in time, so as not to take it lightly and leave hidden dangers for the occurrence and development of breast cancer. Women should have a comprehensive examination by a breast specialist once every six months. Since breast changes are affected by endocrine hormones, about the 10th day of menstruation is the best time to check your breasts. Good habits are vital Breast disease is a common and multi-infarct disease, with a wide range of diseases and similar performance, but different diagnosis, so it is important in prevention. Women should maintain a good mood in their daily life, learn to self-regulate, pay attention to the combination of work and rest, and actively participate in exercise. Secondly, good dietary habits are also crucial. The diet should be diversified, regular and quantitative, nutritious, and planned to consume enough nutrients and calories. Eat more foods rich in vitamin A, vitamin C and low-fat diet, often eat nutritious dried fruits and soy products food, try to eat less fried, barbecued, spicy food.