Forskare ifrågasätter kopplingar mellan vitamin B12-nivåer och cancer

27 maj 2026

Rapporterad av AI

Forskare väcker nya frågor kring förhållandet mellan vitamin B12 och cancerrisk. Även om brist länge har varit känd för att öka farorna, tyder nya studier på att även mycket höga nivåer kan spela en roll.

Vitamin B12 stödjer produktionen av röda blodkroppar, reparation av DNA och nervfunktion. Det förekommer naturligt i kött, fisk, ägg och mejeriprodukter, och vissa förlitar sig på berikade livsmedel eller kosttillskott. De flesta individer med en varierad kost får i sig tillräckligt, även om veganer, äldre och personer med upptagningsproblem kan behöva ett extra intag.

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Forskare ifrågasätter kopplingar mellan vitamin B12-nivåer och cancer

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