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Table of Contents Toggle Literature Scope and Evidence Hierarchy This article is an evidence-informed narrative review rather than a systematic review or meta-analysis
4,1416 Screening and Diagnosis Screening persons at average risk of vitamin B 12 deficiency is not recommended
A: Supplements can help if a deficiency is present, supporting hair regrowth and strength
To ensure sufficient intake of vitamin B12, older individuals are recommended to obtain it from supplements or fortified foods, such as ready-to-eat breakfast cereals
Several studies have indicated that the efficacy of oral vitamin B12 supplements is comparable to that of vitamin B12 injections
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