Thanks Kate
So how would I tell if I'm high risk? Since Grandma only had 3 boys & she has already passed?
It can be more difficult to gather all the information when a relative is no longer around.

Do you know anything about your Grandma's brothers, sisters, cousins or their kids? Did any of the develop cancer?

How many kids did the 3 boys have? How many girls/boys? Is there any cancer in any of your cousins?

All of this information can help to assess your risk.

If your grandma is the only family member who had breast cancer, your risk would only be at or slightly above average risk. This is the risk given to 95% of the female population and gives a lifetime risk of breast cancer between 1 in 11 and 1 in 8. (More than 90% of women in this group will not develop cancer).