How do you prevent breast cancer?

You can't: Generally we think a healthy lifestyle, avoiding known hazards (smoking, excessive alcholol, etc) , getting excercise, appropriate weight etc can be beneficial to overall health. No magic strategy to prevent breast cancer. Most docs in practice still believe screening mammography is indicated at 40, as death rates have plummeted with early detection and treatment.

Prevention: For one with brca 1/2 genes mutation- prophylactic bilateral mastectomies will decrease about 99% risk for breast cancer. For the rest of population without this genetic mutation, there is nothing special- except to have regular screening test with mammogram and have a healthy life style. Well balance diet, decrease processed red meat, avoid cigarettes/alcohol, and exercise regularly.