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Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.

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Vitamin B12 deficiency risk factors

Introduction

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Overview

Overview

For vegans, the risk is very high because none of their natural food sources contain B12. One American study found blood levels below normal in 92 % of vegans, 64 % of lacto-vegetarians, and 47% of lacto-ovo vegetarians.[1] The study applied the old normal values, so in reality a considerably greater proportion may have been deficient.

Risk Factors

Risk Factors

References

References

  1. ↑ Dong A and Scott SC (1982). “Ann Nutr Metab 26(4):209-16”.

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]