Medically Reviewed by Jennifer Robinson, MD on January 16, 2023



      Peter Cade / Stone



      National Heart, Lung and Blood Institute: "What Are the Signs and Symptoms of Pernicious Anemia?"

      Medline Plus: "Anemia - B12 Deficiency."

      Oh, R. American Family Physician, March 1, 2003; vol 67(5): pp 979-986.

      National Heart, Lung and Blood Institute: "What Is Pernicious Anemia?"

      Epocrates Online: "Vitamin B12 Deficiency."

      National Institutes of Health Office of Dietary Supplements: "Dietary Supplement Fact Sheet: Vitamin B12."

      USDA National Nutrient Database for Standard Reference: "Honey."

      National Heart Lung and Blood Institute: "Who is at Risk for Pernicious Anemia?"