Tomatoes have long been praised as a rich source of phytonutrients, including lycopene. Lycopene helps protect your cells and other structures in the body from oxygen damage. Studies have shown this antioxidant power helps protect against certain cancers. In addition to being packed with lycopene, tomatoes are full of traditional nutrients that have been shown in many studies to be helpful for preventing a variety of health conditions. Tomatoes are excellent sources of Vitamin C and Vitamin A, as well as fiber.