Women with a family history of breast cancer have a bigger chance of developing it than average people. Since risk factors does not cause the cancer, a woman with a family history of the disease does not imply that she will certainly develop breast cancer. A majority of women diagnosed with breast cancer never had any close relatives (mother, sister, daughter, grandmother, aunt etc.) affected by the disease. It is thus important for all women to have routine screenings and women with a significant family history of the disease should have a mammogram done every three years.