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Summary Many animal foods are high in vitamin B12

It is considered a strong B12 vitamin because of its high bioavailability, which means the body can easily absorb and utilize it

[DOI] [PMC free article] [PubMed] [Google Scholar] 140.Ahmadian M, Abbott Marcia J, Tang T, Hudak Carolyn SS, Kim Y, Bruss M, et al

And yet the stubborn fat remains

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Also, individuals who have undergone certain surgical procedures, including intestinal resection, bypass, or bariatric surgery, which may reduce Vitamin B12 absorption, are also eligible