DiscoverNutritionFacts.org Video PodcastHow Much Vitamin B12 Do We Need Each Day?
How Much Vitamin B12 Do We Need Each Day?

How Much Vitamin B12 Do We Need Each Day?

Update: 2025-11-24
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How are the recommended daily and weekly doses of vitamin B12 derived?
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How Much Vitamin B12 Do We Need Each Day?

How Much Vitamin B12 Do We Need Each Day?

Michael Greger, M.D. FACLM