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Breast cancer affects one in eight women during their lives. Breast cancer kills more women in the United States than any cancer except lung cancer. No one knows why some women get breast cancer, but there are a number of risk factors. Risks that you cannot change include

  • Age - the chance of getting breast cancer rises as a woman gets older
  • Genes - there are two genes, BRCA1 and BRCA2, that greatly increase the risk. Women who have family members with breast or ovarian cancer may wish to be tested.
  • Personal factors - beginning periods before age 12 or going through menopause after age 55

Other risks include being overweight, using hormone replacement therapy (also called menopausal hormone therapy), taking birth control pills, drinking alcohol, not having children or having your first child after age 35 or having dense breasts.

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Results 1 - 10 of 2,816 for breast cancer
  1. Breast Cancer (National Library of Medicine)  
    Breast cancer affects one in eight women during their lives. Breast cancer kills more women in the United States than ... cancer. No one knows why some women get breast cancer, but there are a number of risk factors. ...
  2. Male Breast Cancer (National Library of Medicine)  
    Male breast cancer is rare. It happens most often to men between the ages of 60 and 70. Risk factors for male breast cancer include exposure to radiation, a family history of ...
  3. Breast Cancer Interactive Tutorial (Patient Education Institute)  
    Breast Cancer Introduction Cancer of the breast is the most common form of cancer that affects women but ... arm, as well as muscles involved in breathing. Breast Cancer Breast cancer may originate from either the glands ...
  4. ... Carcinoma - ductal; Carcinoma - lobular; DCIS; LCIS; HER2-positive breast cancer; ER-positive breast cancer; Ductal carcinoma in situ; ...
  5. Pregnancy and Breast Cancer (American Cancer Society)  
    Pregnancy and Breast Cancer Having breast cancer during pregnancy is very rare. But more and more women are choosing to have children ... of breast cancer during pregnancy are reviewed here. Breast cancer risk What is cancer? Normal body cells grow, ...
  6. Breast Cancer Treatment and Pregnancy (PDQ) From the National Institutes of Health (National Cancer Institute)  
    Search Español Breast Cancer Treatment and Pregnancy (PDQ®) Last Modified: 12/10/2012 General Information about Breast Cancer and Pregnancy Breast cancer is a disease in ...
  7. Breast Cancer (PDQ): Prevention From the National Institutes of Health (National Cancer Institute)  
    ... to keep cancer from starting. General Information About Breast Cancer Breast cancer is a disease in which malignant (cancer) cells ... Cancer Treatment Genetics of Breast and Ovarian Cancer Breast cancer is the second most common type of cancer ...
  8. Breast Cancer (PDQ): Treatment From the National Institutes of Health (National Cancer Institute)  
    Search Español Breast Cancer Treatment (PDQ®) Last Modified: 12/10/2012 General Information About Breast Cancer Breast cancer is a disease in which malignant ( ...
  9. Male Breast Cancer (PDQ): Treatment From the National Institutes of Health (National Cancer Institute)  
    Search Español Male Breast Cancer Treatment (PDQ®) Last Modified: 12/10/2012 General Information about Male Breast Cancer Male breast cancer is a disease in which ...
  10. Genetics Home Reference: Breast cancer From the National Institutes of Health (National Library of Medicine)  
    ... Recent literature OMIM Genetic disorder catalog Genetic Conditions > Breast cancer On this page: Description Genetic changes Inheritance Diagnosis ... names Glossary definitions Reviewed August 2007 What is breast cancer? Breast cancer is a disease in which certain ...
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