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Vitamin B12

also cyanocobalamin, methylcobalamin, adenosylcobalamin

Essential for red blood cell production and neurological health

Vitamin B12, also known as cobalamin or extrinsic factor, is a water-soluble vitamin involved in metabolism. It is one of B vitamins. It plays an essential role in the nervous system by supporting myelin synthesis. It is needed for DNA synthesis and for the maturation of red blood cells in the bone marrow. It serves also as a vital cofactor in both fatty acid and amino acid metabolism. As humans cannot make it, it is required in the diet, making it an essential nutrient. Animals require B12 but plants do not, relying instead on alternative enzymatic pathways.

Information, not medical advice. Talk to a licensed doctor or pharmacist before starting or changing a treatment.

Research 10

  1. Counteraction of Cortisone Inhibition of Body, Hair and Thymus Growth by Vitamin B12 and Aureomycin.Experimental Biology and Medicine · 1951 · 20 citations
  2. 2020 CIS Annual Meeting: Immune Deficiency & Dysregulation North American ConferenceJournal of Clinical Immunology · 2020 · 6 citations
  3. Evaluation of the relationship of digital phototrichogram findings of patients with diffuse hair loss with blood TSH, ferritin and vitamin B12 levelsNorthern Clinics of Istanbul · 2024 · 2 citations
  4. Serum vitamin B12, folate, ferritin, and iron levels in turkish patients with alopecia areataIndian Journal of Dermatology Venereology and Leprology · 2009 · 30 citations
  5. Treatment of chronic discoid lupus erythematosus with large doses of vitamin B12.PubMed · 1953 · 2 citations
  6. Management of Hair Loss in WomenDermatologic Clinics · 1993 · 38 citations
  7. Hair Loss After Laparoscopic Sleeve GastrectomyObesity surgery · 2018 · 22 citations
  8. Quantitative Analysis of Selected Circulating Hematological Biomarkers, Essential Minerals, Vitamins, and Thyroid Hormones in Females Affected by Hair LossDiseases · 2025 · 1 citation
  9. NonScarring Diffuse Hair Loss in Women: a Clinico‐Etiological Study from tertiary care center in North‐West IndiaJournal of Cosmetic Dermatology · 2018 · 53 citations
  10. A Cross-sectional Study of Plasma Trace Elements and Vitamins Content in Androgenetic Alopecia in MenBiological Trace Element Research · 2020 · 25 citations
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