Lauri Wright, PhD, RDN, national spokesperson, Academy of Nutrition and Dietetics and chair, department of nutrition and dietetics, University of North Florida.
M. Elizabeth Swenor, DO, in charge of Lifestyle, Integrative, and Functional Medicine, Henry Ford Health System, Detroit.
Mount Sinai: “Vitamin B12 (Cobalamin).”
Merck Manual: “Vitamin B12 Deficiency.”
National Institutes of Health Office of Dietary Supplements: “Vitamin B12.”
Cleveland Clinic: “The Best Sources of Vitamin B12.”
Harvard Medical School: “Vitamin B12 deficiency can be sneaky, harmful.”
National Heart, Lung, and Blood Institute: “Pernicious Anemia.”
International Journal of Cancer: “Biomarkers of folate and vitamin B12 and breast cancer risk: report from the EPIC cohort.”
Memorial Sloan Kettering Cancer Center:…