Animal Liver and Kidneys and Tuna
Organ meats are highly nutritious foods, including the likes of livers and kidneys. They are known to be rich in vitamin B12. In 100-grams of lamb, individuals can get around 3,571% of the DV for vitamin B12, which is incredibly high compared to other sources of the nutrient.
Beef or veal liver also contains approximately 3,000% of the DV per 100 grams. Lamb’s liver contains other nutrients like selenium, copper, and vitamins A and B2. Beef kidneys, veal, and lamb are all high in vitamin B12.
Tuna is a prevalent fish included in several meals for a good supply of nutrients like vitamins, minerals, and protein. It contains a high amount of vitamin B12, especially around the skin muscles, which are called the dark muscles.
In a 3.5-ounce serving of cooked tuna, individuals can get 453% of the DV for the vitamin. With the same serving size, individuals can get a good amount of selenium, protein, and vitamins A and B3.