Four in 10 women over the age of 40 have dense breasts, which is a risk factor for developing breast cancer and can also make cancers difficult to spot on mammograms. However, many women with dense breasts don’t know that they have them. Now patients and advocacy groups are calling on provincial governments to include breast density information in mammogram reports. This information would empower women to be more proactive with their health and could help those with dense breasts catch their cancers earlier. Read more in a story from CBC News.