Vitamins and Nutrition USMLE Step 1 Practice Question
A 72 year old man who lives alone presents with fatigue, gum bleeding, and easy bruising. Examination shows swollen bleeding gums, perifollicular hemorrhages, and corkscrew hairs. He has poor dentition and reports eating mostly canned soup and crackers. Deficiency of which of the following vitamins is the most likely cause?
Answer choices
- AVitamin CCorrect answer
- BVitamin B6
- CVitamin A
- DVitamin K
- EVitamin E
- FVitamin B12
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