Download the "Examining the risks and the benefits of breast cancer screening"

To help you decide whether or not to come for screening, the main benefits and risks of screening are summarized below.

• Research has shown that regular screening mammograms can lower deaths from breast cancer in women 50 to 69 years of age by up to 25%.

• Most breast cancers are found at an earlier stage when there are more treatment options and there is a better chance of a successful recovery.

• Mammograms require a very low dose of radiation - about the same as the dose of naturally occurring radiation a person receives flying to London and back.

• About 5 to 7 women out of 100 will need extra tests after each screening visit. Although this is a normal part of the screening process, this can cause anxiety and worry for some women.

• Mammography is not perfect. For example, some cancers are very difficult to see on the mammogram, some cannot be seen on the mammogram at all, and the doctor reading the mammogram may miss the cancer (this will happen occasionally no matter how experienced the doctor is).

• Not all breast cancers that are found at screening can be cured.

• Breast screening does not prevent breast cancer. Breast screening only helps find breast cancer if it is already there. Some women may develop breast cancer before their first mammogram or between mammograms. It is important for women to know their breasts and tell their doctor right away if they notice any changes.

Women should have a mammogram every 2 years starting at age 50 or as recommended by their doctor.