They only have a trace quantity of vitamin K. Unless you consume the beet greens, which are rich in vitamin K, the quantity of vitamin K in beets is insufficient to create difficulties with warfarin. Warfarin may become less effective if you consume beet greens. The best sources of vitamin K are green vegetables like spinach, kale, and brussels sprouts. Vitamin K is essential for blood to clot properly. Without enough vitamin K, your blood can't prevent bleeding from any wounds. Eating more foods that contain vitamin K might help reduce your risk of developing heart disease or cancer. Beets are used as a food plant, and their roots are often boiled and served with salads or added to stews. The leaves can be eaten raw in salad or cooked like chard. The stems are usually discarded but the flowers can be used to make candy or vinegar. Vitamin K exists in two forms: phylloquinone (found in plants) and menaquinones (found in bacteria). Phylloquinone is available in small amounts in berries, other fruits, nuts, seeds, dairy products, eggs, fish, meat, and soy products. Menaquinones are present in small quantities in some types of beef and pork; however, processed meats such as hot dogs and sausage contain large amounts of vitamin K1 because they are made by combining meat with salt and spices.