
Everything You Wanted to Know About B12 (Part 2)
From Nutrition Facts with Dr. Greger by Michael Greger, M.D. FACLM
May 14, 2026
About this episode
This episode discusses the safety and necessity of Vitamin B12 intake.
Can we get too much B12? This episode features audio from: How Much Vitamin B12 Do We Need Each Day? Are Large Weekly Doses of Vitamin B12 Safe? Visit the video pages for all sources and doctor’s notes related to this podcast.  
People in this episode
Host: Michael Greger
Topics covered
- Vitamin B12
- nutrition
- health
- diet
- supplements
Keywords
- B12
- Vitamin B12
- nutrition
- health
- diet
- supplements
- daily intake
Mentioned in this episode
Books & works: How Much Vitamin B12 Do We Need Each Day?, Are Large Weekly Doses of Vitamin B12 Safe?
More episodes of Nutrition Facts with Dr. Greger
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- Q&A with Dr. Greger 17 · June 4, 2026
- What’s Taurine and Why Do We Care? (Part 3) · May 28, 2026
- What’s Taurine and Why Do We Care? (Part 2) · May 21, 2026
- Everything You Wanted to Know About B12 (Part 1) · May 7, 2026
- Are Statins Worth It? (Part 2) · April 30, 2026
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