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Here are some rich sources: Meat: Beef and chicken are excellent sources of B12
A 2005 study concluded that oral vitamin B12 and intramuscular (IM) vitamin B12 have similar effects in terms of normalizing serum vitamin B12 levels.(7) The treatment and maintenance of a B12 deficiency largely depends on what has caused it
7 common vitamin and mineral deficiencies that impact metabolic health Vitamin and mineral deficiencies are less common in the United States and developed countries than in countries lacking access to safe, quality food and healthcare---but they're still surprisingly prevalent
But what is Vitamin B12
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