An extremely thin young woman comes to you complaining of the following symptoms: diarrhea, confusion, general weakness and fatigue, irritability and frequent headache. She also notes she consumes large amounts of alcohol daily, and has struggled with eating disorders. She is not vegetarian. While she is talking, you notice that her tongue is smooth and very red. You decide to do a blood work up, which reveals that many of her blood cells are abnormally large and immature. Vitamin: Deficient or toxic levels:
