Adopting a healthy lifestyle today may help prevent breast cancer in the future.
Studies have shown that women who exercise 30 minutes at least three times a week are less likely to develop the disease, partly because exercise helps boost the immune system.
Studies have not shown that a specific diet lowers risk of breast cancer. 

A healthy diet does obviously play a role in maintaining a healthy weight and I think that is where women who eat well are at lower risk of breast cancer and if you are going to consume alcohol, keep it to one drink or less a day.

 Women who consume two or more alcoholic beverages per day have been found to have an increase risk of Breast Cancer which is a risk that is 20 to 30% higher partly because alcohol uses up Folic Acid, an important B-Vitamin.
Some women, because of their genetics, will develop Breast Cancer, no matter their lifestyle but experts say Cancer survivors may help prevent a recurrence by adopting these healthy habits.