Who Is At Risk for Pernicious Anemia?
Pernicious anemia is more common in people of Northern European and African descent. In the United States, older people are at higher risk for the condition. This is mainly due to a lack of stomach acid and intrinsic factor, which prevents the small intestine from absorbing vitamin B12. As people grow older, they tend to make less stomach acid. Pernicious anemia also occurs in younger people and other populations groups. You’re at higher risk for pernicious anemia if you: • Have a family history of the condition. • Have had part or all of your stomach removed. The stomach makes intrinsic factor, a protein that helps your body absorb vitamin B12. • Have certain autoimmune disorders that involve the endocrine glands, such as Addison’s disease, type 1 diabetes, Graves’ disease, and vitiligo. Research suggests a link may exist between these autoimmune disorders and pernicious anemia that’s caused by an autoimmune response. • Have had part or all of your small intestine removed. The small i
