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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 2,522 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)  
    Although breast cancer is much more common in women, men can get it too. It happens most often to men ... usually aren't cancer. However, most men with breast cancer have lumps. Other breast symptoms can include Dimpled ...
  3. ... Carcinoma - ductal; Carcinoma - lobular; DCIS; LCIS; HER2-positive breast cancer; ER-positive breast cancer; Ductal carcinoma in situ; ...
  4. Genetics Home Reference: Breast cancer From the National Institutes of Health (National Library of Medicine)  
    ... PubMed Recent literature OMIM Genetic disorder catalog 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 ...
  5. General Information about Male Breast Cancer From the National Institutes of Health (National Cancer Institute)  
    General Information about Male Breast Cancer Key Points for This Section Male breast cancer is a disease in which malignant (cancer) cells form in the tissues ...
  6. Learning about Breast Cancer From the National Institutes of Health (National Human Genome Research Institute)  
    ... genetic terms used on this page Learning About Breast Cancer What do we know about heredity and breast ... Cancer What do we know about heredity and breast cancer? Breast cancer is a common disease. Each year, ...
  7. Breast Cancer Prevention From the National Institutes of Health (National Cancer Institute)  
    ... 4-CANCER. The following are risk factors for breast cancer: Being female and older age Being female and ... man's risk. A personal or family history of breast cancer or benign (noncancer) breast disease Women with any ...
  8. General Information about Breast Cancer and Pregnancy Key Points for This Section Breast cancer is a disease in which malignant (cancer) cells form in ... affect prognosis (chance of recovery) and treatment options. Breast cancer is a disease in which malignant (cancer) cells ...
  9. Breast Cancer NIHSeniorHealth (National Cancer Institute)  
    ... version of this page please turn Javascript on. Breast Cancer What is Breast Cancer? How Tumors Form The body is made up ... tumors form in the breast tissue. Who Gets Breast Cancer? Breast cancer is one of the most common ...
  10. Breast Cancer (Nemours Foundation)  
    ... for it when they are older. What Is Breast Cancer? The human body is made of tiny building ... liver, or elsewhere. Continue Why Do People Get Breast Cancer? Any woman can get breast cancer, but doctors ...
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