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Vitamin B12 source

Vitamin B12 source

The human body stores several years' worth of vitamin B12, so nutritional deficiency of this vitamin is extremely rare. However, people who follow a strict vegetarian diet and do not consume eggs, dairy products, or fortified grains may need vitamin B12 supplements.






Review Date: 5/21/2012
Reviewed By: Harvey Simon, MD, Editor-in-Chief, Associate Professor of Medicine, Harvard Medical School; Physician, Massachusetts General Hospital.
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