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Those who follow a vegetarian or vegan diet are particularly prone to vitamin B-12 deficiency, as are those with a condition known as Pernicious anemia which affects B-12 absorption in the gut

(Valverde et al., 2012)

[DOI] [PubMed] [Google Scholar] 10.Akgun S, Ertel N, Imperato-McGinley J, Sayli B, Shackleton CHL

Cell Signal 78:109847

Athletes subject to drug testing should not use this product
