Dense breasts are normal and common. 40% of women over age 40 have dense breasts.

Dense breasts make it harder for radiologists viewing your mammogram to spot cancer because dense breast tissue shows up as white and so does a cancerous tumour.

Mammograms are a highly effective tool for women with fatty breasts, but mammograms alone are not enough for women with dense breast tissue. If you have dense breasts, you may want to discuss additional screening, such as ultrasound with your doctor.



“A woman’s postal code should not determine whether breast cancer is found early”

Most  Canadian women don’t know if they have dense breasts because they haven’t been told!

Screening programs in BC, MB,  and NS do not report breast density information to the family doctor.

In the other provinces, even if the family doctor gets the density information, not all doctors tell their patients if they have dense breasts.

Province by province, Dense Breasts Canada is advocating for density notification.


Dr. Paula Gordon: Why Density Matters

Do You Have Dense Breasts?