Tomatoes are the most abundant source of the antioxidant lycopene, which has been linked to a variety of health advantages, including a lower risk of heart disease and cancer. Tomatoes are low in calories and high in nutrients such as vitamin C and potassium. They're also high in antioxidants, including lycopene, which gives tomatoes their distinctive color and has been linked to a variety of health advantages, including a lower risk of heart disease and certain cancers.