Prevent Breast Cancer One breast cancer prevention is a healthy diet. An estimated one in three cases of breast cancer due to dietary factors. A good diet that will help maintain your immune system and this is the most effective disease prevention. Although there has been no food that can cure cancer, eating certain foods and reducing certain other foods can be a preventive measure. Foods that are rich in fiber, can help reduce levels of prolactin and estrogen, it is likely to be bound by these hormones and then throw it out the body. This can further suppress the phase of carcinogenesis (cancer formation). In addition, reducing the saturated fat diet may reduce risk. Soybeans and soy products can be fermented without inhibiting tumor growth. Vegetables rich in vitamin A, like carrots, squash, sweet potatoes, and vegetables, dark green leafy vegetables like spinach, kale and mustard greens, may help. Vitamin A prevents the formation of cancer- causing mutations. While fruits and vegetables rich in vitamin C reduce the risk of breast cancer.