Family history: with a family history of hereditary breast cancer can be manifested in two forms: one for the mother’s risk of breast cancer, her daughter is also a good breast cancer, age of onset of light, often occur in amenorrhea before, mostly for bilateral nature; the other way for 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 2-3 times, and this mostly occurs in breast cancer after menopause, and often unilateral;
Menstrual factors: age of menarche as early as 12 years of age, the risk of breast cancer occurred more than 17 years of age at menarche were 2.2 times as large; menopause later than 50 years of age, more than 45 years of age who suffer from breast cancer after menopause increase the risk of 1 times .
Abortion too: normal spontaneous abortion does not increase the risk of breast cancer, but repeated abortions, or 18-year-old abortion many times before, who easily lead to breast disease, increase the risk of breast cancer risk.
Artificial feeding: breastfeeding is the best natural means of preventing breast cancer, one of the risk of breast cancer, breast-feeding can health reduced by 20% to 30%.
The poor quality of sexual life: breast diseases and sexual life is closely related to women’s sexual repression can be increased lobular hyperplasia and the incidence of breast cancer risk. National survey shows that women suffering from breast lobular hyperplasia, 86% of people in their sex lives never reached orgasm; higher age at first marriage, breast cancer incidence rate.
Depression: In the single woman, stay, Ms. hostess, retired workers, and some secondary school teachers in the higher risk of breast disease, breast cancer incidence was also high. Because these women are apt to stress anxiety, loneliness depression, sadness sadness, depression disappointed, angry and so irritable depression, long-standing negative emotional stimulation, the body rhythms of life disorders, neuro-endocrine system dysfunction, which led to an imbalance within the environment, the immune power drops, can generate and release of the thymus of thymosin reduction in lymphocytes, macrophages of the mutant cells in vivo phagocytic capacity and reduced ability to control, prone to cancer.
Obesity: obesity and breast cancer are closely linked. Obese girls, precocious puberty easy for Japanese breast cancer, laying the seeds of future trouble. Obese breast cancer incidence of cancer 3.45 times higher than non-obese because of excessive fat accumulation, the formation of estrogen by increasing the excess estrogen esters, after being stored in adipose tissue, and continuously released into the blood, resulting stimulation of the breast tissue, over time, easy to cause breast cancer. Again, large obese people have high cholesterol, and hyperinsulinemia, elevated cholesterol, the lymphocytes, macrophages and other cell membrane cholesterol increased suppression of immune function.
Unhealthy living habits: the smoking, alcohol abuse is “fashionable”, go to nightclubs, dance halls all night long, immersed in luxury to being, I am pleased to eat fried food and a variety of pastries sweets, while coarse grains, vegetables, but never dip mouth ; single, or get married after a 30-year-old fertility, birth of a child unwilling to breast-feeding; also some women wear a bra too tight or too loose, lost the role to protect the breast.