2. Tomatoes
Called a “cancer-fighting” food, tomatoes are eaten to help prevent stomach, endometrial, lung, skin, and prostate cancer, and they contain high percentages of potassium, iron, vitamin A, vitamin C, and lycopene. Health journalist Soleil Robins offers a suggestion for ideal consumption: “To get those specific antioxidants easily absorbed into your body, cook a tomato in a pan with olive oil, then eat it warm on top of your favorite pasta.” Eat at least one a day.