I. Concept: Breast diseases include benign and malignant diseases of the breast. Mammary gland hyperplasia is the most common benign breast disease in women, which is a structural degenerative lesion and progressive connective tissue growth in the ducts and lobules of the breast tissue. Its incidence is the first of all breast diseases. In recent years, the incidence of the disease has been increasing year by year, and the age is getting younger and younger. According to the survey, about 70% to 80% of women have varying degrees of breast enlargement, mostly seen in women aged 25 to 45. Among them, about 2% to 4% of patients may develop cystic hyperplasia and become cancerous. Many women take mastocytosis lightly after suffering from it, delaying consultation or seeking to relieve breast pain symptoms, without realizing the potential danger of mastocytosis – that is, a small number of mastocytosis will develop benign breast tumors or malignant lesions, i.e. breast cancer, if they are not cured for a long time. Breast cancer is one of the most common malignant tumors and one of the main malignant tumors in women. It is a disease in which the ductal epithelial cells of the breast lose their normal characteristics and proliferate abnormally under the action of various internal and external carcinogenic factors, so that they exceed the limit of self-repair and become cancerous. Experts advocate to fully understand the early clinical manifestations and harmful effects of mastocytosis, and to achieve early prevention through self-examination and regular medical checkups. Mastocytosis is mainly characterized by periodic pain in the breast. At first, the pain is wandering and swelling, and the tenderness is obvious in the upper and middle part of the breast, and the pain increases before menstruation every month, and decreases or disappears after menstruation. In severe cases, the pain is persistent before and after menstruation. Sometimes the pain radiates to the armpit, back of the shoulder, upper limbs, etc. Patients often report a lump in the breast, but only a thickened breast gland is palpable during clinical examination. A very small number of adolescent simple lobular hyperplasia can heal on their own in about 2 years, while most patients require treatment. Therefore, once patients with symptoms of breast enlargement are detected, they must seek medical attention in a timely manner. Women over the age of 25 must self-examine their breasts every month, specifically by (1) visual examination: take off your shirt, face a mirror in bright light, with your arms down, and observe whether the curved contours of both breasts have changed and are at the same height, whether the skin of the breasts, nipples and areolas has peeled or eroded, and whether the nipples are raised or retracted. Then cross your arms and rotate your body from side to side to continue to observe the above changes. (2) Palpation: Take a standing or supine position, put the left hand behind the head, check the left breast with the right hand, fingers should be together, gradually move clockwise from the top of the breast to check, in the order of external upper, external lower, internal lower, internal upper and axillary, systematically check for lumps. Be careful not to miss any part, and do not press or squeeze with your fingertips. After examining the breast, gently squeeze the nipple with the index and middle fingers to observe if there is any blood-tinged discharge. If you find lumps or other abnormalities through the examination, you should go to the hospital for further examination. Modern medicine believes that marriage, diet, environment and genetic factors are the main causes of breast development. So, how to prevent breast enlargement? 1, keep your mood relaxed and emotionally stable. If emotional instability can inhibit the ovulatory function of the ovaries, there is a decrease in progesterone, so that estrogen increases, leading to breast enlargement. 2, appropriate control of fat intake. Proper control of fat intake has the potential to reduce estrogen overload, so it is advisable to have a light diet. Eat more food containing vitamin B complex, which is conducive to the inactivation of estrogen by the liver. Don’t eat too much salty and spicy food; eat some anti-cancer food and alkaline food with high alkaline content as appropriate for those who are old and weak or have genes for certain diseases. 3.Cultivate good habits and quit smoking and limit alcohol. The World Health Organization predicts that if people stop smoking, after 5 years, cancer in the world will be reduced by 1/3; secondly, do not abuse alcohol. Cigarettes and alcohol are extremely acidic and acidic substances. Long-term smokers and drinkers are very likely to lead to an acidic body. 4. Avoid the use of creams and drugs containing estrogen. Some women use estrogen-containing creams for a long time for skin beauty, making the estrogen level relatively high in the body, which can induce breast hyperplasia over time. 5, marriage and breastfeeding at the right time. Pregnancy and breastfeeding is a physiological regulation of breast function, therefore, timely marriage and breastfeeding is beneficial to the mammary gland; on the contrary, women over 30 years old who are unmarried, infertile or breastfeeding are prone to mammary gland hyperplasia. The mammary gland is a target organ for sex hormones and is affected by the endocrine environment and is subject to cyclical changes. When the “sexual” environment expands and the opportunity for sexual stimulation increases, it can lead to the secretion of “erotropin”, resulting in an increase in estrogen and a relative decrease in progesterone, resulting in mastopexy. The actual fact is that you can find a lot of people who are not able to get the best out of the company. 6, try not to dye your hair. Hair dyes mostly contain lead and p-phenylenediamine, which are potentially carcinogenic dyes, and their long-term use will produce chronic toxicity, which may promote the occurrence of cancer over time. As early as 1963, it was found that hairdressers who are often exposed to hair dyes are prone to bladder cancer, and later it was found that women who often dye their hair are prone to leukemia and breast cancer. 7.Actively prevent and treat gynecological diseases. More than half of gynecological patients suffer from mastopathy, most commonly in patients with menstrual cycle disorders and adnexitis, and a high incidence of breast hyperplasia in patients with uterine fibroids has also been found. Therefore, the active prevention and treatment of gynecological diseases is undoubtedly an important part of reducing the triggering factors of mastocytosis.