Tomato Nutritional Overview Tomato is a fruit that is commonly used as a vegetable in cooking. It is a member of the nightshade family and is native to western South America. Tomatoes are a rich source of vitamins A and C, and also contain potassium and antioxidants. They are used in a variety of dishes, including salads, sauces, and soups, and can be eaten raw or cooked. Tomatoes can be grown in a variety of climates and are a popular ingredient in many cuisines around the world. They are also used to make juice, ketchup and other food products. Tomato: Nutritional Advantages. Tomatoes are a good source of vitamins and minerals, including Vitamin C, Vitamin K, Vitamin A and potassium. They also contain antioxidants, such as lycopene, which may help reduce the risk of certain types of cancer. Additionally, tomatoes are low in calories and high in fiber, making them a healthy addition to a weight loss diet. They also may help to lower blood pressure and improve heart health. Tomato use