From Wikipedia, nutritional value per 100g of raw red tomatoes has 75KJ Energy, 4g Carbohydrates, 2.6g Sugars, 1g Dietary fiber, 0.2g Fat, 1g Protein, 95g Water, and Vitamin C 13mg. Most importantly, tomato has essential natural antioxidants, lycopene, which plays a critical role of tomato nutritional benefits.
Studies has verified that lycupene from tomatoes has strongly effects to prevent cancers, especially, from cooked tomatoes. The lycopene has the function of antioxidant to improve the ability of protecting cells from oxygen damage and protecting DNA inside of white blood cells. Furthermore, it is also proved to be able to strengthen skin’s protection against UV rays.
There is an argument whether it is more nutritious, cooked or not? No scientific study has been recognized. But it is not that important. Tomato is concerned as both fruit and vegetable. Actually, there are thousands of recipes of cooking tomatoes. Or we can just cut it in slices or cubes and blend it into salad.