Breast cancer is a cancer in which dietary-related factors play an important role. You should reduce alcohol, sugar, carbonated drinks, red meat, etc. What are some foods that make your breast healthy? The U.S. health media WebMD organized it. ◆ Mackerel Rich in vitamin D and omega-3 helps fight cancer. Studies show that women who eat a lot of blue fish such as mackerel, tuna, salmon, and sardin..