Myth: Only those with a family history
of breast cancer are at risk.
Buster: Eighty-five percent of those with breast cancer have no family history of the disease, according the University of Michigan Comprehensive Cancer Center. However, having a direct blood relative, like a mother or sister, with the disease does increase your odds. And while you can't change your genes, personal lifestyle factors, like what you eat and how often you exercise, can be altered to reduce your risk. (See 12 ways to slash your breast cancer risk).