A cause of breast cancer: early menarche, late menopause. Menarche younger than 12 years, compared with more than 17 years of age, the relative risk of breast cancer increased 2.2 times. Amenorrhea is less than 55 years of age older than 45 years of age increased the risk of breast cancer doubled. Early menarche, late menopause are the two most important risk factor for breast cancer.
Cause of breast cancer II: genetic factors. Studies have found that if the mother suffered from bilateral breast cancer in premenopausal women, their breast cancer risk for women in general nine times and second-generation emergence of breast cancer patients the average age of breast cancer than the average person about early 10 years. Among sisters suffering from breast cancer in women, the risk is three times the normal. Needs to be emphasized is that breast cancer is not directly inherited, but a "cancer quality" of the genetic, not necessarily relatives of breast cancer patients with breast cancer, but breast cancer than the average person more likely to.
Cause of breast cancer three: marriage and childbearing. Epidemiological studies show that although married women without education or a first child after the age of 30 are also negative factors, but the risk of breast cancer occurred unmarried as married, 2 times. Experts believe that childbirth has a protective effect on the breast, but refers only to the 30-year-old who previously had full-term. Recent studies suggest that breast-feeding on breast cancer has a protective effect, mainly for pre-menopausal women.
Cause of breast cancer four: ionizing radiation. Breast is more sensitive to ionizing radiation, carcinogenic activity of the organization. Young of breast mitotic activity stage, the carcinogenic effects of ionizing radiation, the most sensitive, while the effects of ionizing radiation are additive, multiple low-dose exposure and the risk of exposure to a large extent the same dose, a dose - response relationship.
Cause of breast cancer V: unhealthy eating habits. Breast cancer incidence and mortality and per capita amount of fat digestion have a stronger correlation. Some company employees caused by the high standard of living, high income, the formation of unscientific, unhealthy "high-calorie, high fat 'diet, resulting in greatly increased incidence of breast cancer.
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The first is the mentality of anxiety, the second is arbitrary tonic! Especially you who have nodules, polyps or cysts and the like!
Try not to sleep bra