Is it possible for B12 injections not to work? Here's why
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5 min read
While B12 injections are the standard treatment for many deficiencies, a 2024 review in StatPearls highlights that B12 deficiency can arise from various etiologies, including autoimmune and malabsorption issues, which can impact treatment response. This means that for some individuals, it is possible for B12 injections not to work as effectively as expected, and the reasons can be complex.
