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Breast Cancer Health Center

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Breast Cancer, Race, and Ethnicity

Breast cancer is one of the most common cancers affecting American women, and is second only to lung cancer as a leading cause of cancer death in women. The number of breast cancer cases has been on the rise during the past 20 years, while the death rate from breast cancer has decreased slightly in the past five years. The increase in cases is related, in part, to a greater emphasis on screening with routine breast exams and mammography.

These screening tools often can detect breast cancer at an earlier stage, when it is more treatable, which helps explain why the death rate has not increased significantly.

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Understanding Breast Cancer -- Symptoms

In its early stages, breast cancer usually has no symptoms. As a tumor develops, you may note the following signs: A lump in the breast or underarm that persists after your menstrual cycle. This is often the first apparent symptom of breast cancer. Lumps associated with breast cancer are usually painless, although some may cause a prickly sensation. Lumps are usually visible on a mammogram long before they can be seen or felt. Swelling in the armpit. Pain or tenderness in the breast. Although...

Read the Understanding Breast Cancer -- Symptoms article > >

The exact cause of breast cancer has not been established, but there are risk factors that may play a role. A risk factor is a trait or behavior that increases a person's chance of developing a disease or makes a person susceptible to a certain condition. Risk factors for breast cancer include:

  • Being female (Breast cancer can occur in men, but it is rare.)
  • Getting older
  • Having a family history of breast cancer
  • Having a personal history of cancer in one breast
  • Having your first child after age 35 or never having children
  • Getting your period early in life (before age 12)
  • Reaching menopause after age 55
  • Being overweight (especially in the waist)
  • Long-term use of combined (estrogen and progestin) hormone replacement therapy
  • Being a carrier of an altered form of the breast cancer gene, BRCA1 or BRCA2 (Genes are the basic unit of heredity. They contain instructions for a cell's development and function, and are passed on from parents to children.)
  • Having received chest radiation
  • Drinking more than two alcoholic drinks per day
  • A diet that's high in fat and low in vegetables

Does Race or Ethnicity Affect Breast Cancer Risk?

All women should be aware of their risk for breast cancer. It can affect women of every age, race, and ethnic group. However, the rates of developing and dying from breast cancer vary among various racial and ethnic groups.

According to the National Cancer Institute, white, non-Hispanic women have the highest overall incidence rate for breast cancer among U.S. racial/ethnic groups, while Korean-American women have the lowest rate. Among women ages 40-50, African-American women have a higher incidence of breast cancer than white women and the highest death rate from breast cancer. Chinese-American women have the lowest death rate.

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