A research institute interviewed 1,350 women between the ages of 35-37 years of age found that social class and higher income women, the employment of professionals, come the number of weeding and the use of pesticides is a lower social class women in two times, but will clothes dry-cleaning and the use of vaginal spermicides the number of people, but also more than low-class women into five. Scientists believe that some substances can affect women, the body’s estrogen, causing them to risk of breast cancer.

(1) age, menstruation, childbirth, breastfeeding, living environment and economic status of breast cancer in the elderly for multiple. Women’s menstruation period earlier (before the age of 12 to menstruation), late menopause (after the age of menopause, 50-55), the first child after the age of childbearing age 35 or never childbirth, or childbirth are not breast-feeding, are likely to breast cancer the occurrence of an impact. And the more urban than in rural areas, particularly in the more advantageous socio-economic status populations, the incidence of breast cancer is relatively higher.

(2), benign breast disease and surgical history that some women suffering from certain benign breast disease or breast done a minor operation. Necessary to cut off some of mammary duct surgery, so that the remote catheter is not smooth. Intraductal secretions accumulate, long-term to stimulate the breast tissue, it may lead to cancer. But do not therefore refuse to surgical treatment of breast diseases, such as cystic lobular hyperplasia, intraductal papilloma, etc. If resection of the possibility of future cancer. Surgery is still necessary, but patients should always follow-up examination, in order to detect, timely diagnosis and treatment. Another side of the breast cancer patients increased the chances of contralateral breast cancer, so breast cancer patients must pay attention to whether there is contralateral breast lumps.

(3) The breast X-ray small-dose X-ray does not cause breast cancer, but not the number of patients seeking treatment for anxious, short period of time in several hospitals, many mammography, especially young women, increases the occurrence of breast cancer risk factors. However, patients do not have to worry about X-ray lead to breast cancer. Because the current breast X-ray radiation dose is very small, does not cause cancer.

(4) familial aggregation and genetic factors in some immediate family members of the health of women with breast cancer increased risk of breast cancer. Some people think that genetic factors. Therefore, there is a family life of breast cancer, other members should be vigilant.

(5) high fat diet and obesity in women, the chance of developing breast cancer than normal people do.

(1) Genetic susceptibility: a family history of clinical data of the survey indicate that there is a family history of breast cancer incidence is higher than those without family history. In particular, bilateral breast cancer patients and age of onset of the smaller of these women the risk of breast cancer occurred for nine times that of women in general may be related to genetic factors related to breast cancer susceptibility has the right physical and internal lesions.

(2) endocrine factors: endocrine disorders are one of the causes of breast cancer. As the breast long-standing abnormal endocrine hormone stimulation, resulting in cancerous breast tissue, in which estrogen and progestin breast malignancy most closely with the two endocrine hormone. This point has been successively a number of clinical, pathological and confirmed by physiologist.

(3) viral factors: virus-like particles can be transmitted through breast-feeding, leading to breast cancer occur, this point has been adopted by more confirmed by animal experiments, so that some scholars speculated that the virus may be the cause of breast cancer, but epidemiological evidence is not sufficient , to be further studied.

(4) Other factors: the body’s anticancer immune function, so that anti-cancer factor suppressed immune function; and the trauma of breast stimulation, there is radiation damage, which have reported prone to breast cancer.

The incidence of occult breast cancer, like breast cancer, age and common to middle-aged women, mostly, of which 45 ~ 49 years old and 60 ~ 69-year-old majority. This explains its causes and female sex hormone disorder closely related. Due to the lack of typical symptoms of occult breast cancer, is often neglected by patients, clinical diagnosis is also very difficult, therefore more harmful, should cause the majority of patients and clinicians are highly valued.

As for the hidden causes of breast cancer, some scholars believe that the incidence of breast cancer early, because the immune system strong and can effectively control the growth of carcinoma, so the primary tumor could be brought under control;, but along the lymphatic tumor metastasis the process, may be due to antigen changed, the body’s immune function useless against metastasis only to axillary lymph nodes as the first symptom.

To increase the vigilance of occult breast cancer, for middle-aged women, is to always carefully around the breast changes, with particular attention to palpable, thickened, ill-defined mammary glands, especially glands showed progressive increases, but can not be careless, because the limitations of those who thickening of the gland, 15% of hidden precancerous lesions. At the same time, we must pay great attention to whether there is palpable axillary lymph nodes.

Because occult breast cancer is characterized by only axillary lymph nodes, which leads to the cause of axillary lymph nodes are very complicated, so the body of patients a doctor must first conduct a comprehensive inspection of all systems in order to exclude respiratory, digestive, urinary and reproductive system tumors. Second, whether or not discovered breast lumps, enlarged lymph nodes were carried out on biopsy; should be accompanied by determination of estrogen receptor, which will not only assist in diagnosis, but also to guide treatment. About 50% of occult breast cancer can be discovered X-ray film demonstrated to have specific micro-calcification, or dense shadow. If necessary, respond to suspected sites Zuohuo physical examination to confirm the diagnosis.

In fact, breast pain or lumps, most of them is a normal physiological phenomenon or a benign disease, not all the early signs of breast cancer, so long as to find a qualified breast surgeon through palpation and the related necessary checks can be reassured satisfied. Unfortunately, the event really is a breast cancer, do not panic, anxious to find prescriptions should tie in with the physician to receive regular treatment, is the right way.

Dr. Lee A: The incidence of breast cancer with a number of factors, such as: “breast family” the chance of women suffering from breast cancer than women in general high, their age of onset than their mother to 10 years earlier, and easy to involving bilateral breast . Risk of ovarian cancer, cervical cancer, colon cancer, women susceptible to breast cancer. Side of breast cancer in women, on the other side and then the chance of breast cancer is high.

Abroad, that a restriction on fat intake is to prevent breast cancer with hormone-related one way, that is: the growing proportion of women suffering from breast cancer, and eating too much fatty food related. Laboratory Determination of the incidence of breast cancer and estradiol (E2) increased an estrone (E2) and estriol (E3) to drop. Suffering from cystic hyperplasia of breast ductal women the incidence of breast cancer 4.5 times higher than ordinary women, early menarche ( “12 years old), closed through the night (” 50 years old), 40-year-old who is not susceptible to breast cancer, birth . The above are risk factors of breast cancer, but no large-scale statistics. Life should be taken to avoid the factors that lead to breast cancer occurrence.

The above figures prove that in recent years, women over 50 years of age population, the incidence of breast cancer showed an upward trend year by year. Its causes are many natural, but some women start taking estrogen after menopause to improve symptoms after menopause can not but attract attention.

Estrogen drugs do have to participate in fat, cholesterol metabolism in order to improve the positive role of menopausal syndrome, but the increase in estrogen may cause breast cancer, mainly due to abnormally high levels of estrogen-sensitive breast tissue of chronic stimulation may be led to the breast cell proliferation and changes. Furthermore, hormone-dependent breast cancer is a malignant tumor, clinical data show that when applied over the total amount of estrogen for more than 1500mg, their risk of breast cancer is 2.5 times those who are not used. Therefore, it must be under the guidance of professional doctors to use estrogen drugs. For safety reasons, service estrogen should regularly check the breast surgery to prevent accidents.