The first type of food with high iron content is animal liver, such as pig liver, chicken liver, beef liver, and sheep liver. The internal organs of these animals often contain very high amounts of iron. .

The second type of food is the whole blood of animals, such as blood tofu. The iron content in every 100g of blood tofu is often as high as 30.5mg.

The third type of food is lean meat from animals, such as pork, beef, and mutton. The lean meat from these animals is often very rich in iron.

The fourth category of food is seafood. For example, every 100g of dried shrimps contains up to 11.0mg of iron.