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If weight loss is the goal and B12 levels are normal, plan evidence-based lifestyle changes and consider proven medical options as appropriate
Accessed December 4, 2025
Methylcobalamin is often promoted as superior due to its 'bioactive' status, but clinical evidence supporting significantly better outcomes compared to cyanocobalamin is limited
Research on B12 and Hair Loss A 2015 Journal of Drugs in Dermatology study noted acneiform eruptions (linked to hair follicle inflammation) in 8% of patients receiving high-dose B12 injections
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