Question

explain about vitamin B12 and deficiency disease caused due to it ​

Answer 1

Answer:

Atrophic gastritis, in which your stomach lining has thinned. Pernicious anemia, which makes it hard for your body to absorb vitamin B12. Conditions that affect your small intestine, such as Crohn's disease, celiac disease, bacterial growth, or a parasite. Immune system disorders, such as Graves' disease or lupus.