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Nutrition Facts with Dr. Greger

7. Mai 2026

Everything You Wanted to Know About B12 (Part 1)

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.

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