Breast cancer is one of the most common malignancies in women. The causative factors of breast cancer are unknown, and many factors are believed to play a role in its development to a greater or lesser extent. Recent studies have shown that women who are under chronic stress are prone to a decreased immune system, which, combined with poor lifestyle habits, adds to the burden on the body. The combination of these risk factors eventually leads to the development of breast cancer. With the improvement of quality of life, the change of people’s diet structure, especially the increase of high-fat and high-calorie intake; the increase of environmental pollution; the change of modern women’s living habits, staying up late, smoking and drinking are all triggers for the onset of the disease. The increased pressure that women take on in work and life is also an important reason for the onset of breast disease in high profile women such as experts explain that, from Chinese medicine, and mental factors can affect the internal organs and endocrine system. Experts say that women in professions such as teachers, secretaries and accountants are more common in outpatient clinics. These people tend to work under a lot of pressure and are easily annoyed, and the great mental pressure may cause disorders of the endocrine system. Experts point out that the proportion of young women under 35 years old suffering from breast cancer has accounted for 20% of the breast cancer incidence group, and the increased stress in the work and life of modern women is an important reason for the high incidence of breast diseases. In the past, it was generally believed that the incidence of breast cancer was concentrated in the middle-aged and elderly population over 45 years old, however, it seems that the incidence of breast cancer in young women is increasing year by year. Moreover, about 20% of the patients who undergo breast cancer surgery are under the age of 35. Meaningful statistics show that although the incidence of breast cancer has been increasing annually in most regions of the world in recent years, the mortality rate from breast cancer has not increased significantly. This shows that on the basis of universal breast cancer prevention education, publicity, early breast cancer screening, and comprehensive breast cancer treatment, human beings can gradually overcome breast cancer. In recent years, the incidence of breast cancer has been increasing year by year, and there is a tendency to be younger. Although China is a low incidence area for breast cancer, the incidence of breast cancer is also increasing year by year. Researchers have reported that women who regularly ate soy foods as children had a lower risk of breast cancer. Women who ate tofu and other soy foods regularly between the ages of 5 and 11 had a 58% lower chance of developing breast cancer. It is not clear why soy foods can protect against cancer, but the compound called isoflavones contained in soybeans has estrogenic effects. Researchers at the National Cancer Medical Center Research Institute in Tokyo followed about 25,000 women nationwide between the ages of 40 and 69 for an average of 10.5 years and found that women with high concentrations of genistein flavonoids in their blood were less likely to develop breast cancer than women with low concentrations, and that soy products are rich in genistein flavonoids. Researchers compared blood samples from 144 women with breast cancer with 288 women without breast cancer and found that women with the highest levels of genistein were one-third as likely to develop breast cancer as those with the lowest levels, and that women with the highest levels of genistein typically consumed about 100 grams of tofu or about 50 grams of natto per day. According to the Shanghai CDC, since 2002, they have followed up about 5,000 new breast cancer patients aged 20-74 years in Shanghai for up to five years. The results showed that eating more soy products significantly reduced the risk of breast cancer recurrence and death. Breast cancer patients with the highest soy protein intake had a 29% lower risk of death and a 32% lower risk of recurrence compared to the lowest intake group. Both studies point to the role of tofu in breast cancer prevention, and experts recommend that women, regardless of age, would do well to eat more tofu. Experts say that breast cancer patients who consume about 11 grams of soy protein per day (about 30 grams of dry beans) have the lowest mortality and recurrence rates. According to this conversion, eating 100 grams of northern tofu or drinking 500 milliliters of thick, mellow soy milk will give you a sufficient amount of soy protein. Women with large breasts are more likely to develop breast cancer Recently, American scientists completed a study on breast size and the chances of breast cancer. The results of the study showed that women with large breasts have a higher risk of breast cancer than women with small breasts. In the study, 89,268 women between the ages of 29 and 47 were surveyed. The breast size of these subjects was measured at the age of 20. Then, the researchers followed them over time in an attempt to understand the relationship between breast size and the occurrence of breast cancer. The results of the study showed that women with large breasts had an 80 percent higher risk of breast cancer compared to women with small breasts. The researchers explained this by the simple fact that the larger the breasts, the more breast cells there are. The more cells there are, the greater the risk of potential cell mutation or malignant development. The researchers said the findings are useful to breast cancer researchers, but not of practical significance to the women themselves, because the size of the breast is not something women themselves can decide. The researchers also said that although their findings show that women with larger breasts are at greater risk for breast cancer, it does not prove that women with smaller breasts can rest easy. Breast cancer prevention should be enhanced for all women, not just those with large breasts. Women who abuse birth control pills are prone to breast cancer Birth control pills are the most commonly used form of birth control, but many women beware of the dangers associated with long-term use of birth control pills. Recently, many women have asked whether long-term use of the pill can lead to breast cancer. In this regard, experts say that under normal circumstances, taking the pill reasonably will not induce breast cancer, but abusing the pill will easily induce breast cancer problems. Experts say that the cause of breast cancer has not been determined yet, but it is widely believed that the occurrence of breast cancer is closely related to the elevated estrogen in the body. This also explains the high incidence of breast cancer in women in their 40s, because the hormonal imbalance and high estrogen levels in premenopausal women lead to excessive proliferation of ductal epithelial cells in the breast and induce breast cancer. The main ingredients of birth control pills are estrogen and progesterone, and long-term use of birth control pills will lead to high estrogen levels in the body, thus increasing the risk of breast cancer. Especially for women who abuse emergency contraceptives, the level of estrogen in the body will increase suddenly, which is a major risk factor for breast cancer in the long run. Research shows that the risk of breast cancer is 5 times higher than normal for those who have taken the pill for more than 6 years before the age of 25; the risk of breast cancer is also higher than normal for women who have not had children. In addition to birth control pills, some cosmetic products include a lot of estrogen for skin rejuvenation, and menopausal women take estrogen-containing drugs to prevent osteoporosis, all of which increase the risk of breast cancer. Therefore, experts suggest that women can take the pill in moderation or use cosmetics in moderation, but they should pay attention to the care work and avoid long-term use to avoid the health risks of breast cancer.