Everything You Wanted to Know About B12 (Part 1)

from Nutrition Facts with Dr. Greger · host Michael Greger M.D. FACLM

Including the symptoms of vitamin B12 deficiency This episode features audio from: How Long Does It Take to Become Vitamin B12-Deficient and What Are the Symptoms? The Best Way to Test for Vitamin B12 Deficiency The Best Source of Vitamin B12: Supplements, Shots, or Fortified Foods? Visit the video pages for all sources and doctor’s notes related to this podcast.  

Episode metadata supplied by the publisher feed · Published May 7, 2026

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Everything You Wanted to Know About B12 (Part 1)

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