Fast Five Quiz: Vitamin B12 Deficiency Key Aspects

Romesh Khardori, MD, PhD

Disclosures

January 17, 2023

In Western populations, vitamin B12 deficiency occurs in up to 40% of diets because people often consume a low quantity of vitamin B12–rich foods. In extreme cases, this deficiency can produce neurologic and hematologic signs and symptoms. However, low or marginal vitamin B12 levels (200-300 pg/mL [148-221 pmol/L]) in asymptomatic individuals is far more common. Do you know key risk factors for vitamin B12 deficiency as well as clinical manifestations and best practices for management? Test yourself on this common nutritional deficiency with this short quiz.

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