Nutrition and Vitamin Deficiencies · USMLE Step 1

In populations with limited sun exposure and low dietary intake of fatty-fish or fortified dairy, deficiency of which vitamin is a common global problem leading to muscle weakness and bone pain?

  1. Vitamin A
  2. Vitamin B6
  3. Vitamin D
  4. Vitamin C
Show answer and explanation

Correct answer: Vitamin D

Vitamin D deficiency is common worldwide when sun exposure or dietary intake is inadequate; this leads to impaired calcium absorption, muscle weakness, bone pain and increased risk of osteomalacia and fractures.

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