In fact, the fibroblasts in the lobules have an abnormally high sensitivity to estrogen. Clinical studies have found that the amount of estrogen receptors in the fibroblasts is related to fibroblast hyperplasia, and thus estrogen secretion imbalance has a great connection with the occurrence of this disease. The occurrence of this disease is related to estrogen secretion imbalance, therefore, in the preventive work, in order to avoid estrogen imbalance, in addition to psychological unnecessary too much pressure, including the pressure of life and work pressure, at the same time, should avoid staying up all night as much as possible, or it may be due to estrogen imbalance and lead to the occurrence of breast fibroids, at the same time in the understanding of breast fibroids, also need to understand is that, the contraceptive pill is mostly estrogen class, therefore, it is not necessary to understand that, nowadays. At the same time, after knowing the causes of breast fibroids, it is also necessary to know that nowadays the contraceptive pills are mostly estrogenic, so in order to avoid the enlargement of the tumor, the choice of contraceptive methods should be weighed carefully, and it is better to choose the condom measure. The causes of breast fibroma are as follows: 1, congenital factors: that is, the fibroblasts in the lobules of the mammary glands have abnormally high sensitivity to estrogen, which may be caused by the high number of estrogen receptors contained in these fibroblasts. 2, in addition, it is generally believed that breast fibroblasts have a high sensitivity to estrogen. 2.In addition, it is generally believed that the production of breast fibroma is related to the stimulation of estrogen: as part of people’s breast tissue is more sensitive to estrogen, so by the stimulation of estrogen, the epithelial and fibrous tissues of the mammary glands will undergo different degrees of hyperplasia. 3.Endocrine factors: breast fibroids have certain relationship with reproductive or endocrine factors, the following groups of people occur breast fibroids is 1.3-3 times of the normal population, such as the age of menarche is less than 12 years old or the age of menopause is more than 55 years old; high level of oestrogen after menopause or use of oestrogen substitution; the age of the first child birth is more than 35 years old, or not give birth to children, no breastfeeding after birth; short menstrual cycle, which shows that Estrogen acts for a long time. 4.Life style: diet, radiation, medical treatment and life style are also one of the causes of breast fibroids, such as vegetables, fruits, yams, mushrooms, soy products, carrots, green tea, etc., which can reduce the incidence of morbidity, if women often drink alcohol or increase the total fat intake, especially obesity in postmenopausal women, it may also increase the incidence of morbidity. 5.Gene inheritance: if there is breast fibroid disease in the first generation relatives (mother, sisters, etc.), this family may be a high-risk group. Now it is found that if the patient’s blood or tissues contain BRCA-1 gene, and at the same time, if the BRCA-1 gene can be detected in her children, then her children are in the state of high risk, but it doesn’t mean that this disease is heritable. But this does not mean that the disease is hereditary. 6.Age of onset: if the mother develops breast tumor after menopause, then the chance of her children developing breast tumor is only 20% more, but if the mother develops breast tumor before menopause, then the chance of her children developing breast tumor is 2 times more, so this is also one of the reasons for the development of breast fibroma. The prevention of breast fibroma Due to the diet caused by breast fibroma, improve the diet may be able to alleviate the symptoms of the disease, so in the diet should be how to adjust to improve it? 1.Diet should be high protein and low fat: women with breast fibroma should eat high protein and low fat diet, such as dairy products, fish, beans, eggs, etc. High protein can supplement body amino acids, increase the nutrition and resistance of patients, low fat diet is to avoid excessive fat intake, accumulate in the breast, aggravate the burden on the breasts and aggravate the disease, and eat less greasy food, such as too much fat, lard and so on. 2, eat more vitamin-rich foods: the sick should be more vitamin supplement, novelty fruits and vegetables inside the rich vitamins, carrots, green vegetables, celery, apples, kiwi, coconut and so on. 3.Eat less estrogen-containing food: the development of breast fibroids can be closely related to estrogen, so the diet should avoid estrogen-containing food, otherwise it will aggravate the condition. 4.Chinese medicine: it can regulate the qi and dredge the liver, eliminate the swelling and disperse the knot. It can reduce the symptoms.