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Biomed Res Int
According to a study by Obeid et al., a widely accepted expert consensus on diagnosing and treating vitamin B12 deficiency, recognized that untreated deficiency can lead to irreversible symptoms
A 2025 European Journal of Clinical Nutrition commentary on the NICE guideline argued that the diagnostic threshold and clinical awareness still need to be tightened further, especially around pernicious anaemia, which is still under-recognised in primary care
Who Should Consider B12 Injections
This is why doubling your tablet dose does not double what you absorb
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