Breast Density Facts

What You Need to Know

  • An estimated 81,000 New Brunswick women have dense breasts.
  • About 40 per cent of women over the age of 40 have dense breasts, which means their breasts have more glands and less fat.
  • You can’t tell how dense breasts are just by looking at them, by their firmness or their size.
  • Only a radiologist can determine breast density by looking at your mammogram.
  • The denser the breast, the higher the risk of getting breast cancer.
  • Dense breast tissue masks cancers in mammograms. Since both cancer and dense tissue appear white on a mammogram, it is difficult for radiologists to determine if what they are seeing is cancer or not.
  • Mammograms miss 50 per cent of cancers in women with the highest density breasts.
  • Having dense breasts is a bigger risk factor for breast cancer than family history.

Dense breasts without red circle


Ask your doctor about your breast density and what screening methods are right for you. Be vigilant with your self-exams. It could save your life.

Get informed about breast density at Dense Breasts Canada.

Breast cancer is the most commonly diagnosed cancer among New Brunswick women and is a leading cause of cancer-related death. Early detection saves lives!