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Causes Of Breas.t Cancer. by felsunseg(m): 4:36pm On Feb 19, 2015 |
The body's cells reproduce themselves throughout your lifetime, as tissues wear out and their cells are replaced in a controlled manner. Brea.st cancer - like all cancers - occurs when that control is lost and cells begin to divide at an unusually high rate. No single trigger or cause has been identified for brea.st cancer. Certain risk factors exist, though, that increase a woman's chance of developing it: 1. age - it's more common in women over 50 2. family history - if a woman's mother or sister had the disease before menopause, this is occasionally associated with one of two genes linked to breas.t cancer 3. previous breas.t cancer 4. family history of ovarian cancer 5. age of pregnancy - women who haven't had children, or whose first child was born after age 30 6. age of menstruation - starting periods at a young age (under 12 years old) 7. entering menopause later (over age 55) increases breas.t cancer risks 8. recent research suggests that women who start smoking regularly within 5 years of the onset of their menstrual periods are 70% more likely to develop breas.t cancer before the age of 50 than non-smokers having 9. dense breas.t tissue 10. radiation treatment to the chest, especially before 30 years of age 11. alcohol consumption contributes to the risk of breas.t cancer 12. hormone replacement therapy (HRT; estrogen plus progesterone) increases the risk of breas.t cancer slightly after 5 years of therapy 13. oral contraceptives increase risks slightly, if used over many years 14. Obesity with excess caloric and fat intake.
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