vitamin b12 deficiency diseases
Vitamin B-12 deficiency anemia (pernicious anemia). Vitamin B-12 deficiency can result from a diet lacking in vitamin B-12, which is found mainly in meat, eggs and milk.Vitamin B-12 deficiency anemia can also occur if your small intestine can't absorb vitamin B-12.itamin B-12 deficiency anemia caused by a lack of intrinsic factor is called pernicious anemia. 1  Vitamin C deficiency anemia. 2  Vitamin C deficiency can develop if you don't get enough vitamin C from the foods you eat.