Nutrition and Vitamin Deficiencies · USMLE Step 1

Which vitamin deficiency is most likely responsible when a patient has slow wound healing, easy bruising, and frequent gum bleeding in a context of poor diet low in fresh fruits and vegetables?

  1. Vitamin E (tocopherol)
  2. Vitamin C (ascorbic acid)
  3. Vitamin B1 (thiamine)
  4. Vitamin B2 (riboflavin)
Show answer and explanation

Correct answer: Vitamin C (ascorbic acid)

Vitamin C deficiency impairs collagen synthesis, leading to weak connective tissue, poor wound healing, gum bleeding, and bruising typical of scurvy.

Difficulty: Medium Question 19 of 21

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