Tomatoes are rich in carotene, vitamin C and B vitamins, and have high nutritional value. It can be used as both vegetables and fruits, and can be eaten raw or cooked. Tomatoes can be used to process ketchup, tomato juice and diced tomatoes. Tomato is rich in lycopene, which has strong antioxidant capacity, can lower blood pressure, clear away heat and toxic materials, and can also be extracted as health care products. Immature tomatoes can't be eaten. They contain an alkaloid component, which may be poisoned if eaten too much.