A 23-year-old woman comes to the office complaining of nausea and vomiting, anorexia, and belching. The patient has chronic gastritis. The patient is at risk of what vitamin deficiency?

  1. Vitamin A
  2. Vitamin B12
  3. Vitamin C
  4. Vitamin D
Explanation

Answer - B - Chronic gastritis destroys the parietal cells. The stomach's ability to absorb vitamin B12 is lost, resulting in vitamin B12 deficiency.

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