Cancer Prevention and Screening

Doctor with client, woman getting mammogram, 3 women, 2 people wearing hat and sunglasses

Breast Health

Breast cancer is the most common type of cancer for women in Ontario.

Regular screening can find breast cancer when it is still very small and less likely to have spread.

Take Action

  • Women aged 50 to 74 -  go for a mammogram every two years
  • Talk with your doctor or nurse or call the Ontario Breast Screening Program (OBSP) at 1-800-668-9304 to book a mammogram
  • Women 30 to 69 years at high risk for breast cancer — have a mammogram and MRI every year

Know Your Breasts

Look and feel for:

  • Lumps or thickening in the breast
  • Change in size or shape of the breast
  • Skin changes such as redness or a rash
  • Dimpling or puckering of the skin
  • Nipple changes
  • Nipple discharge
  • Unusual pain in the breast or armpit
  • Swelling under the armpit or below the collarbone
  • Report any changes to your doctor or nurse

Risk Factors

  • Being a woman
  • Having a family history of breast or ovarian cancer
  • Having dense breasts
  • Having the gene mutation  BRCA 1 or BRCA2
  • Radiation to the chest
  • High exposure to estrogen