Does anyone else hear have a hereditary disease that runs in their family that renders them terrified at times?

Breast cancer runs very strong in my family and having seen so many of my relatives suffer and die from the disease the thought of having it at times fills my heart with fear. Every time I get a mammogram done I'm so scared that I cry. Has anyone else had to deal with fear like this?
Does anyone else hear have a hereditary disease that runs in their family that renders them terrified at times?
Post Opinion