No food has been definitively found to promote breast cancer, but there are some you may be wise to limit, especially if you're at high risk due to a family history of breast cancer: "Unhealthy" fats, such as those from processed foods Meat cooked at high temperatures Red meat (particularly for postmenopausal women) Alcohol, which has been found in epidemiological studies to be associated with an increased risk of breast cancer—the more a person drinks, the higher the risk Foods high in iron, including red meat, foods fortified with iron, and iron supplements