Blood is something that is inside of our bodies and it helps to carry oxygen and other important things around the body. Blood is not usually eaten as food but some cultures do use it in some dishes. Blood is high in protein and iron and it can be used in soups, sausages and more. Blood is also a very popular ingredient in some traditional dishes. Blood is not always safe to eat as it can carry diseases, so it is important to make sure it is cooked thoroughly before eating it.