I got breast cancer at age 59. The main things they asked were if you had an abortion, if you did not breast feed and if anyone in your family had cancer. The abortion factor and not breast feeding seemed to be important causes in developing breast cancer.
My wife breast fed both children, and now in her late 60’s she was just tested for breast cancer, and none was detected. This is in spite of her being a stage-4 cancer patient (lungs, rib bone, brain).