What percentage of people are affected by Vitamin B12 deficiency according to researchers at the University of Oxford?
Researchers: B12 Deficiency Affects Up TO 20% Of People

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2.
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What are some common symptoms of Vitamin B12 deficiency that can be mistaken for other conditions?
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Why might people with Vitamin B12 deficiency have difficulty managing their appetite?
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In which groups of people is B12 deficiency more common?
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What are some sources of Vitamin B12 mentioned in the text?
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