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Those with pernicious anemia (a type of autoimmune condition), H
Are B12 injections better than oral B12 supplements
A comprehensive review in Nature Reviews Disease Primers described B12 deficiency as a significant and underrecognized public health concern, particularly among older adults, individuals with gastrointestinal conditions, and those following plant-based diets (Green et al., Nat Rev Dis Primers , 2017)
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