... of the most powerful natural antioxidants, which, especially when tomatoes are cooked, has been found to help prevent prostate cancer ... of canned products, such as stewed tomatoes, whole tomatoes, tomato sauce, tomato puree, and diced tomatoes. Tomatoes are often juiced and can be concentrated ... sometimes packed in oil this way.125 million tons of tomatoes were produced in the world in 2005. China, the ...