Ukuntuleka kwe-Vitamin B12 kungenzeka uma umuntu engatholi i-vithamini eyanele ekudleni kwakhe, futhi eshiywe engalashwa, izinkinga ezinjengezinkinga zombono, ukulahleka kwememori, ukushaya kwenhliziyo okusheshayo nokulahleka kokuhlanganisa ngokomzimba kungenzeka.

Kuzuzwa kangcono ngokudla okuvela esilwaneni, njengenyama, i-salmon, ubisi namaqanda, okusho ukuthi ama-vegans kanye nemifino bangaba sengozini yokuntula i-vitamin B12.

Futhi, ezinye izimo zezokwelapha zingathinta ukumunca komuntu i-B12, kufaka phakathi i-anemia eyingozi.

Izindebe eziqhekekile ziye zaxhunyaniswa nokushoda kwamanye amavithamini B, kufaka phakathi uvithamini B9 (folate), uvithamini B12 (riboflavin) novithamini B6.

Ukushoda kwe-zinc nakho kungadala izindebe eziqothukile, kanye nokoma, ukucasuka nokuvuvukala ezinhlangothini zomlomo.

Izimpawu eziningi ziyathuthuka ngokwelashwa, kepha ezinye izinkinga ezibangelwa yilesi simo zingalungiseka uma zingalashwa.

I-NHS iyaxwayisa: "Uma isimo singalashwa isikhathi eside, maningi amathuba okulimala unomphela."

I-NHS iyeluleka: “Uma ukuntula kwakho uvithamini B12 kubangelwa ukungabi bikho kukavithamini ekudleni kwakho, ungahle unikezwe amaphilisi kavithamini B12 ozowaphuza nsuku zonke phakathi kokudla.

“Abantu abakuthola kunzima ukuthola uvithamini B12 owanele ekudleni kwabo, njengalabo abalandela ukudla okune-vegan, bangadinga amaphilisi kavithamini B12 impilo yabo yonke.

“Although it's less common, people with vitamin B12 deficiency caused by a prolonged poor diet may be advised to stop taking the tablets once their vitamin B12 levels have returned to normal and their diet has improved.”

Uma ukuntuleka kwakho kukavithamini B12 kungabangelwa ukungabi bikho kukavithamini B12 ekudleni kwakho, ngokuvamile kuzodingeka ube nomjovo we-hydroxocobalamin njalo ezinyangeni ezimbili kuya kwezintathu impilo yakho yonke.