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America's B12 Deficiency, Pt 1

Originally aired on 1/11/2012

Are you exhausted, forgetful and lacking energy? You may suffering from a vitamin B12 deficiency. Find out what causes this deficiency and what you can do about it.

Guests: Dr. David Katz , Kate Geagan , Keri Gans, MS, CDN , Dr. Neal Barnard