How did breast cancer come out?

Breast cancer is occurring from the breast ductal cancer, a common malignancy of women. In many Western countries, the incidence of breast cancer accounts for the top female. In China, breast cancer accounts for the first two women. According to relevant data, the incidence rate of 23/10 million people in the female in the male is only 0. 49/10 million people. Man breast cancer accounts for about 1% of the entire breast. Most breast cancer occurs in 40 to 60 years of age or pre-and post-menopausal women, particularly in the 45 ~ 49 years old and between 60 to 64 years of age the highest incidence. What are the causes of breast cancer?

The occurrence of breast cancer with the following factors:

(1), hormone secretion disorder: the so-called hormone secretion disorder mainly refers to the female hormone secretion disorders. Because of high incidence of breast cancer age 40 to 60-year-old woman. In this age period when women’s estrogen hormone imbalance, a period of high estrogen levels. Since the secretion of estrogen increase, this could make the excessive ductal hyperplasia of epithelial cells become cancerous.

(2) reproductive and lactating: In recent years through a large number of investigations proved that there is no birth or have a maternity few lactating women than breast cancer occurring several times lactating, lactating women over a long time. This shows that have more children, more than likely increase the incidence of breast cancer nursing opportunities.

(3), fibrocystic breast disease: the lesions mentioned earlier, it is a pre-cancerous lesions, easily transformed into breast cancer.

(4) Genetic factors: mainly manifested in the family history of breast cancer. According to data from abroad, positive family history can be manifested in two forms: one for the mother’s risk of breast cancer, her daughter is also a good breast cancer, which mostly occurs in breast cancer before menopause, often for the Bilateral; another way for the the mother suffered from breast cancer is not, but in a family, at least two sisters suffering from breast cancer, such families in the incidence of breast cancer than those without family history of breast cancer families with a high incidence of 2 to 3 times, and the This mostly occurs in breast cancer after menopause, and often unilateral.

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