Breast Cancer & The Environment

What Is Cancer?


  • Cancer begins in cells, the building blocks that make up all tissues and organs of the body, including the breast.
  • Normal cells in the breast and other part of the body grown and divide to form new cells as they are needed.
  • When normal cells grow old or get damaged, they die, and new cells take their place.
  • Sometimes, this process goes wrong. New cells form when the body doesn't need them, and old or damaged cells don't die as they should.
  • The genetic material (DNA) of a cell can become damaged or changed, producing mutations that affect normal cell growth and division.
  • The buildup of extra cells often forms a mass of tissue called a lump, growth, or tumor.