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Description
If vitamin B12 deficiency persists without treatment, you will experience conditions like anemia with abnormally large red blood cells, low counts of white blood cells, platelets, inflammation of the tongue, fatigue, palpitations, muscle weakness, digestive problems, mood disorders, dementia, and nerve dysfunction causing numbness and tingling in the hands and feet

2023;18:e0289616

It can also increase the risk of suicide

10.1089/acm.2006.12.881 Summary Keywords vitamin B12, efficacy, bioavailability, therapeutic approaches, meta-analysis, cobalamin Citation Mazur M, Ndokaj A, Salerno C, Vallone J, Ardan R, Bietolini S, Carrouel F, Wilk A, Sarig R, Ottolenghi L and Bourgeois D (2025) Efficacy of sublingual and oral vitamin B12 versus intramuscular administration: insights from a systematic review and meta-analysis

While some believe it may aid hair regrowth, limited clinical evidence currently supports its effectiveness for hair restoration
