What is the bigget risk factor for breast cancer?

Breasts: 1 in 8 women in the us will develop breast cancer in their lifetime, therefore no woman should feel immune to this disease. The best chance for cure exists when we catch the cancer before it causes any symptoms; the best test to find breast cancer is a mammogram. I recommend beginning mammography at age 40, unless one has a family history of breast cancer at an early age. Mammograms save lives.

Breast cancer: Probably the highest risk factor is inheritance, meaning mother, sisters, etc you can be tested for a gene for female cancer named braca gene which if positive gives you a high risk for cancer.

BrCA1/2: The strongest risk factor is jews women with brca1/2 mutation.

You: Being a female with breast - #1 risk factor. Other risk factors: early menses, late menopause, 1st child at 35, no children, hormone replacement therapy, alcohol, family history and being a carrier of brca1/brca2 genes.