Medical technology is improving day by day, but the incidence of cancer is steadily increasing year by year. Breast cancer is the most common among women. Some big cities report that breast cancer accounts for the first place of female malignant tumors. So what exactly is the ghost in the making, leading to the incidence of breast cancer increased? According to the grapevine it has something to do with soy milk. Let’s find out. Factors related to the cause of breast cancer: The cause of breast cancer is still unclear. The mammary gland is the target organ of many endocrine hormones, such as estrogen, progesterone and prolactin, etc., of which estrone and estradiol have a direct relationship to the onset of breast cancer. 20 years of age before the disease is rare, after the age of 20 the incidence of a rapid increase in the age of 45-50 years old, the incidence of post-menopausal incidence rate continues to rise, may be related to the increase in the content of estrone in the elderly. Early age at menarche, late age at menopause, infertility, and age at first full-term delivery are all associated with the development of breast cancer. A history of breast cancer in a first-degree relative is associated with a risk of incidence two to three times that of the general population. The relationship between benign breast diseases and breast cancer is still debated, and most people believe that high epithelial hyperplasia or atypical hyperplasia in the lobules of the breast may be related to the development of breast cancer. In addition, over-nutrition, obesity, and fatty diets can enhance or prolong the stimulation of breast epithelial cells by estrogen, thus increasing the chance of development. The incidence rate of breast cancer in North America and Northern Europe is about 4 times higher than that in Asia, Africa and Latin America, and the incidence rate of breast cancer in the second and third generations of immigrants gradually increases after the residents of low incidence areas migrate to the high incidence areas, suggesting that there is a certain relationship between the environmental factors and lifestyles and the incidence of breast cancer. To summarize is the elevated incidence of breast cancer is associated with estrogen (estrone, estradiol), body weight, infertility, seed clusters, and genetic factors. So is there any “hormone” in soymilk? It is true that soy milk contains isoflavones, which are phytoestrogens. Isoflavones have been studied and found to have estrogen-like effects. As mentioned above, elevated estrogen is associated with increased incidence of breast cancer. And isoflavones have estrogenic effects. However, isoflavones not only do not increase the incidence of breast cancer, but also reduce its incidence. The principle is as follows: Isoflavones are chemically related to estrogenic activity as structural analogs, showing inhibitory and synergistic bidirectional regulatory effects: when estrogen levels in the body are low, isoflavones occupy estrogen receptors, exerting a weak estrogenic effect, and showing an increase in estrogen levels; when estrogen levels in the body are too high, isoflavones occupy the receptor positions in a “competitive” manner. When estrogen levels in the body are too high, isoflavones “compete” to take up the position of the receptor, while exerting a weak estrogenic effect, and thus overall show a reduction in the level of estrogen in the body. Perhaps it is a little difficult to understand. It can be understood as a hero, which always helps the weak. It helps estrogen when estrogen is not sufficient for regular physiological activities. But when there is too much estrogen, which brings bad effects on the breast gland as well as other organs, it fights against the estrogen effect. Thus, to prevent breast cancer and can achieve the effect of beauty. It can be said to kill two birds with one stone. In fact, a cup of fresh soymilk every day is very good for the body. But soy milk is nutritious and easy, too much may be over-nutrition, which can lead to obesity. Adipose tissue can secrete estrogen, so obese people are mostly accompanied by increased blood estrogen levels, obese girls, early menarche. Adult female obese people often have menstrual disorders, ovarian hyalinization increased. But it is certain that a cup a day does not cause obesity. Therefore, do not put obesity, blame it on a cup of soybean milk.