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Common causes include inadequate dietary intake, particularly in those following strict vegetarian or vegan diets that exclude meat, eggs, and dairythe primary sources of B12
A 2024 study published in the Proceedings of the Nutrition Society found deficiency prevalence ranges from 5 to 52% in vegans and 6 to 14% in vegetarians, depending on supplement use
These guidelines work hand-in-hand with reconstitution procedures to ensure the integrity of your materials
3 Further weakening of immune resistance against FIP
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