Eight induced breast cancer,
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1. Genetic : those with family history of hereditary breast cancer can be manifested in two forms : one for mothers suffering from breast cancer, her daughter has a good breast cancer, age at onset light, and often occurred in amenorrhea ago, and many of bilateral; Another of the mother suffered from breast cancer, but in a family, at least two sisters with breast cancer, family breast cancer incidence rates than no family history of breast cancer families high incidence of 2-3 times, and this breast cancer occurred in amenorrhea, often unilateral;
2. Menstrual factors : age of menarche as early as 12 years of age, breast cancer occurred more dangerous than 17 years of age at menarche large 2.2 times; Late in the menopausal age of 50, more than 45 years after menopause were suffering from the risk of breast cancer increased 100%.
3. Abortion excessive : normal spontaneous abortion not increase the risk of getting breast cancer, and repeated abortions, or 18-year-old done so many times before abortions, which causes breast disease, the increased risk of breast cancer risk.
4. Artificial feeding : breastfeeding is the best prevention of breast cancer natural means, nursing students can reduce the risk of breast cancer 20 to 30%.
5. The poor quality of sex life : breast disease and is closely related to sexuality, women's sexual repression can increase breast lobular hyperplasia and the incidence of breast cancer risk. National survey shows that people with breast lobular hyperplasia of women and 86% of the sex life has never reached orgasm; Age at first marriage is, the higher the incidence of breast cancer.
6. Depression : the single woman, rear President, the public relations girls, some retired workers and secondary school teachers, with more breast disease, breast cancer incidence rates are high. As a result of these vulnerable women have anxiety, loneliness depression, sad mood, depression disappointed and manic outbursts depression, long-term adverse emotional stimulus, the body of life rhythm disorder, neuroendocrine system dysfunction, thus leading to environmental imbalance, weakened immunity, so thymus production and release of thymosin reduced, lymphocytes, macrophages right mutant cells in vivo monitoring phagocytic capacity and ability, prone to cancer.
7. Excessive obesity : obesity and breast cancer are closely linked. Obese girls easy precociousness cols = 1 & target = _blank "> precocious, Holland, planted the seeds of breast cancer.肥胖者乳腺癌等癌症的发生率高于非肥胖者3.45倍,因为脂肪堆积过多,雌激素的生成便增加,多余的雌激素被脂化后贮存于脂肪组织内,并不断地释放进入血液,对乳腺组织产生剌激,久而久之,易引since breast cancer. Again, obesity has a large hypercholesterolemia and hyperinsulinemia, increased cholesterol, lymphocytes, macrophages and other cell membrane cholesterol content, inhibit the immune function.
8. Bad habits : smoking, drinking, as "fashionable", go to nightclubs and dance halls all night long, immersed in extravagant living, eating fried food-and various sweets, cakes, and the coarse grain, vegetables has never soiled mouth; Celibacy, or over the age of 30 married and given birth Health unwilling to breastfeed a child; Some women wear a bra too strict or too lax, lose the protection of the role of the breast.
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