Nutrition and Vitamin Deficiencies Practice Questions
21 free Nutrition and Vitamin Deficiencies practice questions for the USMLE Step 1, each with the correct answer and a detailed explanation. Open any question below, or take the full set as an interactive quiz.
Questions
21 questions
All Nutrition and Vitamin Deficiencies questions
- Q1. A 4-year-old child from a low-income region presents with night blindness and develops Bitot’s spots on conjunctiva. Which vitamin deficiency is most likely re…
- Q2. Which of the following is a fat-soluble vitamin that tends to accumulate in body fat and liver, and deficiencies take months to develop if intake is inadequate?
- Q3. An adult strict vegetarian presents with macrocytic anemia and hypersegmented neutrophils. Serum methylmalonic acid is normal but homocysteine is elevated. Whi…
- Q4. Deficiency of which vitamin leads to pellagra, characterized by the “3 Ds”: dermatitis, diarrhea, and dementia?
- Q5. Chronic deficiency of which vitamin impairs calcium absorption, predisposing to osteomalacia in adults or rickets in children?
- Q6. A patient with chronic alcohol use presents with confusion, ophthalmoplegia and ataxia. Which vitamin deficiency should be suspected?
- Q7. Deficiency of which vitamin leads to cheilosis, angular stomatitis, and corneal vascularization due to impaired maintenance of mucous membranes?
- Q8. A 28-year-old woman reports easy bruising and prolonged bleeding after minor cuts. Laboratory shows prolonged prothrombin time. Which vitamin deficiency is mos…
- Q9. Which vitamin deficiency would most likely manifest with scurvy: poor wound healing, bleeding gums, and joint pain?
- Q10. Which statement correctly contrasts fat-soluble versus water-soluble vitamins in terms of storage and deficiency development?
- Q11. Which population group is at highest risk of developing deficiency of fat-soluble vitamins due to impaired fat absorption?
- Q12. An adult vegetarian who has not consumed dairy or eggs for several years presents with fatigue and paresthesias in lower limbs. Which vitamin deficiency is mos…
- Q13. Deficiency of which vitamin during pregnancy increases risk of neural tube defects in the fetus?
- Q14. Which vitamin deficiency may present with seborrheic dermatitis-like rash, glossitis, and cheilitis especially in severe malnutrition or chronic disease?
- Q15. Which vitamin plays a critical coenzyme role in redox reactions of carbohydrate and protein metabolism and whose deficiency leads to mucocutaneous lesions and…
- Q16. An adult with chronic pancreatitis (causing fat malabsorption) is at risk of deficiency of which vitamin leading to bleeding tendency and poor bone mineralizat…
- Q17. Deficiency of which vitamin can impair immune function and integrity of epithelial barriers, increasing susceptibility to infections?
- Q18. Which vitamin deficiency in newborns (especially if not given prophylaxis) leads to increased risk of bleeding and hemorrhagic disease?
- Q19. 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 l…
- Q20. Which vitamin deficiency can result in megaloblastic anemia with neurological symptoms due to impaired DNA synthesis and methylation reactions?
- Q21. 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 leadin…