What Causes Vitamin B-12 Deficiency?

Since Vitamin B-12 can be found in certain foods we eat, a deficiency can occur if we are not eating the right types of food. A Vitamin-B12 deficiency can also develop because of medical reason like pernicious anemia, or when a person has a disease that is associated with the digestive tract. However, there may be other causes. You can find more information here: