Olive oil is a wise alternative to using normal vegetable oils for many reasons, from increasing heart health to reducing inflammation within the body, and that is also why it is so valuable in fighting back against breast cancer. The anti-inflammatory properties of olive oil, primarily due to the presence of omega-3 fatty acids, can help to eliminate oxidative stress and make it more difficult for tumors to develop or spread. Olive oil can be used in your cooking, as a dressing, or even consumed plain in small doses to protect your body against breast cancer.